FYI everyone, ice cream salt is rock salt. Rock salt is sodium chloride, just unrefined.
@shadowgoku2689
6 жыл бұрын
The Action Lab hey i got a question, if you left food like a slice of pizza, a piece of cooked steak, or half a fruit in a vacuum for 2 or 3 days does it rotten? Or go bad at least? Can you left the chamber in vacuum whitout having it working for that much time?
@MammaOVlogs
6 жыл бұрын
very interesting , so l can't use table salt to make icecream?
@BradGryphonn
6 жыл бұрын
Interesting because I've always been told that salt makes ice colder. For many years when filling a cooler with beer and ice, we'd add a kilo of salt to the ice. My belief was that it kept the ice from melting too fast. Now I know what is happening. Thanks.
@tyronenelson9124
6 жыл бұрын
Rurouni Kenshin The food in a vacuum will still eventually go bad but not as fast because you are removing most of the oxygen from the food that the bacteria that is already in the food that need to (breathe) and spread
@santiagosanchez8201
6 жыл бұрын
The Action Lab no it's not!!
@TheNocturnalAlchemist
6 жыл бұрын
I thought it was common knowledge that salt prevents water from freezing. That’s why they put it on the roads before a snow storm
@Jetmech1781
6 жыл бұрын
Salt lowers the freezing point and raises the boiling point of water. I could be remembering incorrectly, but salt lowers the freezing point of pure water to 25°F.
@GamerNerdess
6 жыл бұрын
For most modern humans, if it isn't a phone, a car, or money, they don't want to know jackshit about it.
@johnking1058
6 жыл бұрын
true, and sometimes not even their car or money
@venomrecords8885
6 жыл бұрын
Road salt and Rock Salt is not the same. Road Salt is halite and is the Mined natural mineral form of table salt or sodium chloride. Rock Salt contains mineral impurities which is why it is usually brown or has a gray color to it.
@venomrecords8885
6 жыл бұрын
Road Salt is also sometimes mixed with other minerals.
@justanotherfreakinchannel9069
6 жыл бұрын
I think you're mistaken on one very important point here: Melting ice means turning it from a solid to a liquid. Thus you don't necessarily need to raise the temperature of ice to "melt" it, all you need do is lower the freezing point of the water it's composed of, which is exactly what the salt does. Therefore salt DOES melt ice.
@djones02
2 жыл бұрын
Just like putting water in a vacuum chamber causes it to boil. You don't have to heat water to boil it.
@BaronKsatria
2 жыл бұрын
The thing is, this guy often exchange the term "boil" and "evaporate". While evaporate means turn into gas, does not require heat, the action boiling does.
@LaOwlett
2 жыл бұрын
@@BaronKsatria This is just an every day guy who likes science, not a scientist.
@samsonfpv8902
2 жыл бұрын
He’s dumbing it down. Unfortunately this hurts the world rather than help it.
@jumpman8282
Жыл бұрын
As explained in the video, the ice is already melting. The salt only prevents the resulting water from turning back into ice.
@danielrowson3379
6 жыл бұрын
Semantics. Salt melts ice, it accelerates the phase transition from solid to liquid by inhibiting the refreezing of water.
@MechanicusTV
3 жыл бұрын
it's not even semantics, melting is any change in phase from a solid to a liquid, he's just factually incorrect.
@Mattjammar
3 жыл бұрын
@@MechanicusTV actually melting is a phase change from solid to liquid due to an increase of temperature. The salt does not increase the temperature (it is not exothermic) of the ice/water it only lowers it's freezing point; it is still only melting due to ambient temperatures being higher than the waters freezing point. If what you said were true, and the salt is what is melting (changing states due to increase in temperature) the ice; salt water should never freeze (sea water freezes at around 28F/-2C).
@Broockle
3 жыл бұрын
Not semantics Nuance is the word u'r looking for. Yes the end result is liquid salt water, but the way we got here was not by adding heat to melt. Rather it was to prevent water that would usually freeze from freezing. So saying 'salt melts ice' is leaving out important parts of the story.
@9-seven
3 жыл бұрын
@@Mattjammar I know this comment is a bit old, but that's an incomplete definition of melting. A better definition, as given by the IUPAC Compendium of Chemical Terminology: "The conversion of a solid to a liquid by the application of heat and/or pressure." The pressure component is really important.
@Mattjammar
3 жыл бұрын
@@9-seven yes, but salt doesn't change either the amount of heat or pressure on/in the ice; so, the extra definition doesn't change anything here. The salt just mixes with already liquid (already melted) water on the surface of the ice to create a solution with a lower freezing point, and doesn't refreeze unless ambient temperature get significantly lower.
@phineas614
6 жыл бұрын
If the definition of “melting” is when a substance changes states from a solid to a liquid, then salt does, in fact, melt ice. When salt dissolves in water, it changes the chemical makeup of the substance so the freezing point is lower than 32 degrees Fahrenheit. The reason that the water can drop to below 32 degrees after adding salt is because the ice that is already in the cup is below 32 degrees and the liquid salt-water that results from the addition of the salt is able to drop to the same temperature as the solid ice because its chemical properties change.
@MrBrew4321
6 жыл бұрын
I fully agree. In fact I felt a little trolled by this video because there was no new information here for me, as I already understood everything presented. However playing action labs advocate, if you look for a definition of melting you can find this one, "make or become liquefied by heat." with this google query, "define melt". And if the definition requires heat then yes salt does not heat ice and does not melt it. Again however, I do agree with you that the definition should incorporate the change of state from solid to liquid and not depend entirely on heat.
@simon6071
6 жыл бұрын
+Brew Sauce Definition of MELT in Merriam-Webster dictionary. transitive verb 1 : to reduce from a solid to a liquid state usually by heat 2 : to cause to disappear or disperse According to the first definition, salt does melt ice because heat transfer to ice does happen during the melting of ice with the use of salt. The small amount of ice melted by the salt initially would become super cold when heat energy in the saline solution formed is absorbed by the ice to meet part of its demand for latent heat required for melting. As the saline solution becomes super cold, it is able to absorb heat from the air much faster and transfer the heat to the ice for melting. The definition does not specify where or from what the heat comes from. It only specifies that heat is used on the solid to be melted during melting. The word HEAT in science is not limited to energy that people can feel as warmth. It also includes energy in the movement and vibration of the molecules in the saline solution under 0 degree Celsius. According to the second definition, salt also melts ice as the molecules in the ice are dispersed to form water after salt is added. Under this definition, heat transfer is not under consideration at all. Obviously, you were mislead by The Action Lab guy's wrong idea that heat was not transferred to the ice during melting in the presence of salt just because the remaining ice became colder. The ice, or more specifically surface portion of the ice, did receive heat energy from the salt (a very small percentage), from the water formed from ice that melted (less than 30%) and from the air (more than 70 %). Since 1 gram of ice at 0 degree Celsius would turn into 1 gram of water at 0 degree Celsius after absorbing 334 joules of heat energy, that means giving energy to ice will not cause the ice to rise in temperature. However, the super cold saline solution formed after giving latent heat to the ice for melting can cause the remaining ice to become colder and gives the illusion that heat energy has not been transferred to the ice during melting.
@kayden9052
4 жыл бұрын
big brain time
@pathogrin
4 жыл бұрын
NEEEERD
@Anonymous-jr8us
3 жыл бұрын
i just gained my braincells
@gogobebe8460
4 жыл бұрын
The explanation about why salt goes on the ice when making homemade ice cream is exactly why I looked for this video so thank you!
@gusgusmadrona710
6 жыл бұрын
It lowers the freezing temp and attempts to stop ice from forming, you need to apply it before walkways and roads have ice covering them..........
@SirHenry98
6 жыл бұрын
but only a few degrees go an look at wiki or so
@geminico61
6 жыл бұрын
Gustav Plettig it’s a big difference still
@0422Juls
6 жыл бұрын
Lowers?
@0422Juls
6 жыл бұрын
Gustav Plettig Don't look at Wiki. Wiki is for retards who don't know how to properly research
@gusgusmadrona710
6 жыл бұрын
0422Juls yes, instead of h2o freezing at 32F at sea level you can lower its freezing temp to the mid to upper 20s with the right salts
@poplick65
6 жыл бұрын
"Salt does not melt ice." *shows salt melting ice* "It's not melting, it's just making solid ice form liquid water."
@valeriobertoncello1809
4 жыл бұрын
No, it's making water NOT turn back to ice. Did you watch the video?
@liquidpalladium6518
4 жыл бұрын
I know right it’s stupid
@gabrielwanyera3775
3 жыл бұрын
😭😭😭😭
@futurevoid4261
3 жыл бұрын
Here is a simple experiment for you guys to do and test this for yourselves get a plate a matchstick or a toothpick Ice Cube and salt must not be cube salt Put the ice cube on the plate put the matchstick on the ice then throw the salt on top of it then you tell me what happens and please @JawbreakerNoah do test this the only stupid thing here is your inability to experiment for yourself you judging something you didn't experience
@MechanicusTV
3 жыл бұрын
@@valeriobertoncello1809 the action lab is 100% incorrect here it's melting the ice by lowering the freezing point.... it's still melting. it's still a phase change.
@ericliume
6 жыл бұрын
I DO NOT agree with your title. This is a truly tricky question, or should I say the definition of melting is not well defined. Salt here plays a key role to interrupt the crystallization of ice, so that the cold water will stay in liquid form. It is sorta like the salt decreases the melting point of ice to a much lower temperature. But I still don't agree with the title. The melting point & boiling point of matters can be affected by many factors, such as pressure, purity, etc. Salt here will make the water not pure, hence the melting point will change. It is just like you can not make a conclusion by saying the heat does not boil the water, the pressure does, then showing people the water with room temperature can boil in a vacuum chamber.
@arshali4704
4 жыл бұрын
I agree with you
@valeriobertoncello1809
4 жыл бұрын
But the common misconsception is that salt melts ice BECAUSE it adds heat to it. It's like people believing that low pressure makes water boil faster because low pressure air is hotter than high pressure air. I think the title is OK tbh.
@user-xr6xi5ym6e
3 ай бұрын
Exactly!!!!!
@user-xr6xi5ym6e
3 ай бұрын
When you sprinkle salt onto ice, it make ice colder but it melts way below 0*C. Salt is sodium chloride and when sodium and chloride ions bond into water, it melt the ice and prevent ice from freezing back. This give a new freezing point at -21*C. The title is MISLEADING!!!!!
@joeymiccio6061
6 жыл бұрын
So if salt doesn't melt ice how come there was way more water in the cup with salt then the cup without salt
@MrUnknownzz1
5 жыл бұрын
@Joey, 4:32 - 5:09 Basically salt interrupts water from crystallizing.
@ultimate9worrior663
5 жыл бұрын
MrUnknownzz1 aka melting
@realdeal5712
5 жыл бұрын
@@ultimate9worrior663 melting is when solid turn into liquid. Prevent liquid from turning into solid is not melting. Its like cook stove of water inside a freezer. U cant say the water is melting when it already fking melt. It just prevent water from freezing. Same with this. They melt at same rate except the one without salt freeze back again while the salt ice doesnt. Use ur brain omg.
@mayo8708
3 жыл бұрын
@@realdeal5712 salt melts ice. I put Epsom salt on ice in my backyard and it melted. The areas where I didn't put the salt, the ice was still there.
@biggiedickson
2 жыл бұрын
@@mayo8708 There's always water on ice, the salt prevented this from turning back into ice.
@alexistzou7447
6 жыл бұрын
That's still melting the ice lol..melting means turning it into a liquid
@J0EB0B555
6 жыл бұрын
Lana Banana it doesn't do that though. It just stops it from freezing again after it melts on its own.
@TheActionLab
6 жыл бұрын
+Kun Kodiik that’s a good way to say it!
@integratorpi
6 жыл бұрын
Saying salt doesn't melt the ice gets into semantics. I'll have to go back and watch all your videos to see if you ever say your vacuum pump is sucking out the air, which it doesn't.
@johndazzo2653
6 жыл бұрын
Eric Kehoe damn came here in and roasted
@TheActionLab
6 жыл бұрын
+Eric Kehoe I actually did a video on how nothing actually sucks. but yes it is getting into semantics but it’s just an interesting way to teach something and a way for nerds to annoy regular people
@hyperfixatedgremlin
6 жыл бұрын
I've never heard that salt melts ice. I've heard and witnessed it cracking the ice to make it safer to walk/drive on.
@minusdin
6 жыл бұрын
Did you watch the video, the dude just said that salt prevents water from freezing. (But he did only use ice cream salt, so my argument is false.)
@hyperfixatedgremlin
6 жыл бұрын
+Aqua Fyre You do realize it's not the salt in water that keeps the oceans from being frozen right? If the world were cold enough to freeze entire oceans we would be living in an Ice Age.
@0422Juls
6 жыл бұрын
BreAnna Phillips My thoughts precisely I don't event think salt is advertised to melt it either.
@RandomPerson-oh6nj
6 жыл бұрын
BreAnna Phillips My science teacher always said salt melted ice, never believed her, it seemed stupid.
@simon6071
6 жыл бұрын
+Random Person :3 If someone tells you that you a hair dryer dries hair? Do you think he/she is stupid too? We know electric energy from the power plant ALONE can not dry your hair. A hair dryer WITHOUT electric energy from the power plant can not dry your hair either. It takes the hair dryer and the electric energy to work together to dry your hair. Therefore, depending on the circumstances under which the conversation is made, you may credit the hair dryer or the electric energy or both for drying your hair but WITHOUT DENYING CREDIT TO ANY ONE OF THEM. Therefore, you should not claim a hair dryer doesn't dry your hair by arguing that it is electric energy alone that dries your hair because that is stupid and does not agree with the fact that it take both of the hair dryer and electric energy to work together to dry your hair. Ice cubes don't melt inside your freezer no matter how long you keep them there . However, if you put a lot of salt on the ice cubes and keep them in the freezer, the ice cubes will melt in a couple of days. Stop being misled by the stupid claim that salt does not melt ice. Yes, salt melts ice. That's a fact.
@SOAHCSOAHCSOAHC
6 жыл бұрын
"Salt doesn't melt ice!" ::proceeds to melt ice with salt:: Ok, I actually do understand what's being explained. It was just an amusing visual is all.
@mylespop
6 жыл бұрын
Give them a 30-45 minute discussion on the laws of thermodynamics. One of the best lines ever
@jamesnw
6 жыл бұрын
Salt lowers the freezing point by a process called "freezing point depression". There's even a chart of constants for Molal Freezing Points, which depends on combinations of elements put together. This impurity so to speak can lower the freezing point causing mixtures to liquify again, since the mixture now interferes with the ability of any one element to freeze as before. Besides lowering the freezing point, the boiling point is usually also affected. Interesting experiment: Boil water in a microwave until it bubbles. Remove from the microwave, wait for the bubbles to just stop, then quickly add a handful of salt and watch it boil again (careful, it may boil over). Most people expect "melting" to be defined as "to become altered from a solid to a liquid state, _usually_ by heat [not always]" (as many online translations state in general), it is *not wrong* to say salt melts ice at all in that context.
@larrybrewer6982
6 жыл бұрын
Yep. Like he said
@jack19931214
6 жыл бұрын
The Experiment with the bubbling has a different reason. Tm and Tb are ALWAYS pushed apart by dissolving Something in a liquid because it lowers the chemical Potential. Salt water therfore boils at a higher temperature. The explanation of your experiment has to do something with the (easier) formation of gas bubbles on the surface of the salt crystal. Try the same with coke, the CO2 bubbles out faster when you add salt ;)
@tjfjt
6 жыл бұрын
@@larrybrewer6982 he specifically said it doesn't melt ice, by showing it melt ice
@mjames7674
5 жыл бұрын
@@tjfjt There are two processes going on as he stated, there is constantly liquid turning to ice and ice turning to liquid. Salt makes it so the liquid cannot turn to ice, so technically, it's just stopping the water from freezing. Sure, he's being a tad bit over semantic, but it's for the sake of the video and lesson
@cienciabit
4 жыл бұрын
When salt is put in contact to ice, Na+ ions stick to oxygen and Cl- to hydrogen, because water is polar and they break some hydrogen bonds that are the cause of ice to be solid. This is possible because ionic bonding is stronger than hydrogen bondings. When we heat ice it absorbs heat and the shaking of the molecules breaks some hydrogen bondings too and ice melts. So salt melts ice, but others prefer to say that water dissolves ice.
@leafmanwithafryinpan
4 жыл бұрын
For a science account, you sure are avoiding the basic definition of what "melt" means and the fact that the salt isn't melting the ice, and that it's just preventing it from refreezing
@ruankoen5947
2 жыл бұрын
Im confused and hungry
@coolstar7819
2 жыл бұрын
@@leafmanwithafryinpan oo!
@201hastings
2 жыл бұрын
@@leafmanwithafryinpan According the Cambridge dictionary melt is to turn from something solid into something soft or liquid, or to cause something to do this. Sounds pretty dead on to me
@mrsurname9217
6 жыл бұрын
"Salt Does Not Melt Ice!" - Shows a video of salt melting ice.
@KimoKimochii
3 жыл бұрын
ikr misleading title
@fredmench4552
3 жыл бұрын
I heard this comment in my head the moment before opening the comments and it was the 1st one.
@ksaklove
3 жыл бұрын
My thoughts exactly!!
@justsomeguywithwizardmusta1366
3 жыл бұрын
@@fredmench4552 🤣
@TinkeyandJohn
3 жыл бұрын
The salt is not melting the ice. The salt is literally just making the ice melt itself.
@omgwtfbbqkitty
6 жыл бұрын
What should be done is do this experiment at room temp, freezing (0C), and even lower maybe -10C so the salt still can't melt the ice by lowering waters freezing point. That way it would show that ice "melts ice" but only if the surrounding air is at a certain temperature.
@hrdkorebp
9 ай бұрын
Salt lowers the freezing point to -16C
@user-xr6xi5ym6e
3 ай бұрын
Nope, salt lower the freezing point of water to -21*C
@atheistontheroad4545
6 жыл бұрын
I'm sorry, but you're confusing "melt" with "gets hotter". Melting is actually the phase change from a solid to a liquid. The salt does, in fact, facilitate that change. When the salt is dissolved in the water, it lowers the freezing point of that water thereby not allowing it to refreeze despite the "freezing" temperature. It forces the water from a solid state to a liquid state, which is exactly what melting is. It does melt the water by reducing its freezing/melting point to a point that is lower than its current temperature. It has the added benefit of absorbing heat in the process which is what helps freeze the ice cream. The salt forces the water to change phases, which requires energy, which is removed from the ingredients in the ice cream maker, which turns the ingredients into ice cream. It's really simple. The ice dissolves into the water, which lowers the freezing point of the water initiating a phase change. That phase change is what the word melt means. That phase change requires energy which reduces the temperature, yielding the condensation and frost on the outside of the glass. If you had a vial of water inside that glass of salted ice, it would freeze. (Assuming you didn't salt it too) In fact, adding any solute to the water would do the same thing. Table salt is just readily available and extremely easy to dissolve. It's also extremely safe and extremely effective. You could do the same thing with sugar, but it's a bit slower and much stickier.
@mjames7674
5 жыл бұрын
No, he's not confusing "melting" and "getting hotter". There are two processes going on as he stated, there is constantly liquid turning to ice and ice turning to liquid. Salt makes it so the liquid cannot resolidify once it has already liquified (at the same rate that the ice without salt would liquify). So technically, it's just stopping the water from refreezing, there was no increase in the rate at which the ice liquifies. Sure, he's being a tad bit over semantic, but it's for the sake of the video and lesson.
@dan428
6 жыл бұрын
it IS melting the ice.. it just doesn't melt it with HEAT.. NaCl interferes with the kinetic molecular bonding of H20. You should've been more clear about what's happening. Salt decreases the FREEZING level of water, so that it needs to be below the typical freezing level in order to turn to ice. Since the outer portions of the ice that is in contact with the warm air is above this temperature, it turns to liquid quicker.. which means it is melting the ice. Unless you could desalinate that water without warming it, it will remain liquid. I feel like you just ended up confusing people more with this video.
@TheActionLab
6 жыл бұрын
+dan428 The outer portion of is not liquid just because the temperature. Even if the temperature were below freezing there would still be a layer of liquid on the outside of the ice due to the disruption of the molecular lattice of the water to air interface. The point of the video is to explain that ice turning to liquid is an equilibrium phenomenon and not a heat phenomenon.
@dan428
6 жыл бұрын
The Action Lab I guess the issue was with the title because as you said.. melting is the process of ice (or any solid) turning to liquid (not just the outer layer) even if it’s not by process of heat absorption. Just like boiling is when it reaches boiling point even if it’s not being heated. Maybe you’ll do a follow up video or experiment clearing this up? I get what you’re saying but to most people the debate about the word “melt” will just confuse the issue and wasn’t fully explained. But I did like the video.. I was surprised to see just how cold the melted water was! I think if you poured more salt after the initial melt you would’ve gotten even more liquid.
@lorenzo42p
6 жыл бұрын
agreed, it's an equilibrium phenomenon, if you agree that melting is a change in material phase not a change in temperature.
@jont39
5 жыл бұрын
@@TheActionLab Pratt, you said it doesn't melt ice but it does end of
@russiandollie
2 жыл бұрын
The only reason I watched this video is because I know they use salt on roads to keep them from freezing but they also use salt on icecubes in coolers to keep them from melting longer. These two facts always clashed in my head so thanks for explaining ✌🏻
@KuraIthys
6 жыл бұрын
Claims salt doesn't melt ice, then proceeds to demonstrate that ice with salt poured on it melts faster than the control. Well done. XD Anyway///
@KuraIthys
6 жыл бұрын
Incidentally this does in fact mean that the salted ice melted more. Of course, the actual reason for that is because the temperature at which salt water freezes is lower, which means suddenly it can still be liquid at below normal freezing temperatures. The temperature going down is because the reaction is endothermic, but the reason it creates water is because the freezing point of the mixture is lower, hence the combination already has enough energy to melt.
@gosat2002
6 жыл бұрын
You’re right. Melting is the process of solid turning into liquid. Salt increased the speed of melting.
@leesaudan
6 жыл бұрын
Yeah. But the author seems to DEFINE "melting" to mean/imply "heating", which I don't agree.
@russellwen1410
6 жыл бұрын
It lowers the freezuing point of water
@ryanh1544
6 жыл бұрын
leesaudan Agreed, I thought he was going to make the argument that the salt doesn't increase the rate which the ice will liquify... Which is what I assumed melting is, the ice turning from a solid to a liquid state... Maybe the our understanding of the definition of melting is how we've been lied to. Lol.
@alfiewilson9596
6 жыл бұрын
The process of melting is turning a solid to a liquid you learn that at school
@lorenzo42p
6 жыл бұрын
exactly
@Potacintvervs
6 жыл бұрын
theprogamer9001 But the salt ITSELF doesn't melt the ice, it only takes the surrounding heat from the air and can transfer it into the insulating layer of water on the ice causing an endothermic reaction, cooling down the ice more while preventing the absorbtion of heat by refreezing on the ice.
@pedroff_1
6 жыл бұрын
Zach Darnell just like a hammer "doesn't break things", just transferring its energy to the object being hit? I think it isn't misleading to say that salt melts ice. It's not the most direct cause for the ice melting, but it is fair to say its impact and casual effects are quite direct.
@DaveShindig
6 жыл бұрын
Pedro Franca The ice isn’t melting. The definition of melting is the change from solid to liquid via adding heat. There’s a thermodynamic equilibrium between the water molecules which causes the surface to change between liquid and solid at all times on a molecular level. The addition of the salt ions into the water molecules that thermodynamically shift between liquid and solid cause the liquid to shift out of equilibrium and prevent them from once again becoming solid. This happens at or slightly under the freezing point of water. Or you could just say it “melts,” and I don’t think anyone’s day will change that much hahaha.
@pedroff_1
6 жыл бұрын
David Barney I mean, I can try to comprehend it might technically not be classified as melting (still, I think melting should be attributed to any kind of fusion,whether due to inbalences, pressure or temperature changes). Stiçl, claiming in the video title ice doesn't melt seem misleading,and even a bit clickbaity, ehich is what made me angry at it all. It's lile I made a video claiming someone wouldn't fall when in the air just to find a cheap loophole around the definition of falling.
@gabrielastilla9609
6 жыл бұрын
"Half hour to 45 minute discussion on the laws of thermodynamics" Hahahaha
@johnathonmcalister6645
2 жыл бұрын
Others have already commented on depressing the freezing point. In addition, the change in equilibrium results in shifting the water from the solid state to the liquid state - also known as "melting". When ice melts, it absorbs heat - and this is why the resulting mixture is much lower in temperature. The reverse is also true - freezing water releases heat, as can be seen by supercooling water and then disturbing it to make it suddenly freeze - it releases a fair amount of heat to the container. This is because of the different energy states on either side of the phase change. You also see this with the liquid/gas phase change.
@lysergikdubz2364
6 жыл бұрын
Dude you turned this into a semantic argument not a scientific one. When the average person says "melting", you and I both know they mean phase transition. If you put ice in a vacuum chamber, wouldn't it also "melt" despite the temperature going down? Are you going to claim that doesn't count as melting because the energy level didn't increase? Also, I can't find anywhere that defines melting as heat related. It's a phase that can be achieved through combinations of temperature, pressure, and additives alike.
@sebassrosr
4 жыл бұрын
en realidad la sal solo evita que el agua que ya se ha ido derritiendo vuelva convertirse en hielo como lo explica en el min 4:40
@pyroromancer
4 жыл бұрын
@@sebassrosr w0t
@Unmannedair
6 жыл бұрын
I disagreed with just about everything he said. Salt increases the local entropy, but doesn't change the specific energy. That is why the temperature drops. That increase in entropy is the same thing that happens when you warm something up. Increasing entropy to change the phase of a material is generally referred to as melting... The temperature change part has nothing to do with the phase change. The liquid water simply speeds up the mixing by increasing the surface area of contact by dissolution of the crystals. Put the ice in a hard vacuum, then put salt on it and watch as the ice sublimates at a faster rate. Then tell me that salt doesn't melt ice... (Please note that the vacuum theoretically prevents the ice from getting heat easily. It will also not be a fast process.)
@DaveShindig
6 жыл бұрын
Unmannedair I think what you’re getting wrong is the ice has to be below the freezing point of water but above the freezing point of saturated salt water. Not sure what would happen to its triple point in a vacuum. That might make an interesting video.
@baronvonhypnosis
6 жыл бұрын
but ice turning to liquid is the definition of melting......
@labyrinth3295
4 жыл бұрын
Yeah that's what I was thinking Wait did he say liquid water🤣
@LiborTinka
6 жыл бұрын
Actually ice has a thin water layer that repeatedly melts and refreezes. So when you put salt on top, it mixes with the water layer preventing it from refreezing. This slowly "melts" the ice as the ratio of salinated water increases. The effect depends on ambient temperature of course. This should be better seen on some ice crystals in saline solution under a microscope.
@sebassrosr
3 жыл бұрын
I see that there is a lot of confusion in the comments, so I will try to explain it: the ice, even without salt, is constantly melting, that is, it becomes liquid, but at the same time this liquid is constantly turning into solid ice, it's called equilibrium. But when we add ice to it, the freezing temperature of the water drops, so the ice will still continue to melt, as it normally does, but the liquid obtained will not be able to return to its solid ice state, and that's the reason why we see that the ice melts, however it is not the salt that does it, but it prevents the ice that has turned into water from returning to its solid state
@ok-ec6us
6 жыл бұрын
wait I'm so confused The ice with the salt on it has melted 6 times faster right Its just colder does that change the fact that it melted 6 times faster
@nayyarrashid4661
5 жыл бұрын
That's not the problem... The problem is if it is colder then why doesn't it convert back into ice....
@nayyarrashid4661
5 жыл бұрын
Nevermind the answer is in next comment...
@n0nenone
5 жыл бұрын
@@nayyarrashid4661 where
@yashbanerjee5714
6 жыл бұрын
*you've just seen an unoriginal comment*
@eetusuutari8354
6 жыл бұрын
lol. Even before watching this video I knew that salt just lowers the freezing point of water
@gavinjenkins899
6 жыл бұрын
That still doesn't melt ice on its own. It does if you can apply the salt before the ice, but here, since it's already frozen, that's not good enough. It also needed warmth from the room.
@Daniel-xh9ot
6 жыл бұрын
Eetu Suutari You must be a genius
@simon6071
6 жыл бұрын
+Eetu Suutari No, you are wrong. Salt does not JUST lower the freezing point of water as you and The Action Lab guy claim. Salt also INITIATES the melting of ice at sub-zero air temperature when ice does not melt on its own nor does the heat energy stored in the sub-zero temperature air able to melt the ice. Salt is one of the two essential factors that cause ice to melt at sub-zero air temperature and it is the factor that starts the melting in such condition. Therefore, it is justified to say salt melts ice without discrediting the role played by heat in the surrounding.
@simon6071
6 жыл бұрын
This was my reply to Real Deal under Gina Lola's thread: "Reforms into a solid' for water means "refreeze" . The ice needs to be melted first before it can "refreeze" into ice. Salt can initiate the melting of ice at sub-zero air temperature . Salt can also prevent the water formed from melting ice from refreeze into ice. BOTH of these two properties cause ice to melt faster than when no salt is added. Therefore, it's no illusion that salt melts ice. A electric hair dryer can dry your hair faster. It is foolish to claim that a hair dryer does not dry your hair faster by arguing that it it only prevents water from sticking on your hair." However, the Chrome browser prevents my reply to Real Deal from posting but Firefox browser allows my reply to be posted to him. I wonder why Google chrome is doing this.
@simon6071
6 жыл бұрын
+David Typical reply from a common core minion. No logic, no reasoning, no sensible counter argument. Just abject denial.
@Roll-Penut
6 жыл бұрын
I know why it "melts" the ice! It's because it lowers the freezing temperature because brine freezes at 0°F and water freezes at 0°C and when the salt dissolves into the water, it makes it brine. This was super interesting, thanks!
@Petiscorei
Жыл бұрын
Salt stops the ice crystal formation, even if it's cold it can't freeze or refreeze because ice can't form
@Lrick806
6 жыл бұрын
"I'm going to show you your whole life us a lie. Salt does not melt ice." Universe implodes.
@killerjilk
6 жыл бұрын
*shows salt melting ice* "uhh... but you see... its.... its... THERMODYNAMICS because... salt lowers the temperature of ice and dissolving is slightly endothermic sooooo checkmate?
@lorenzo42p
6 жыл бұрын
actually it's still ice, the salt just converts the ice into a liquid ice, but not water because that would mean melting. liquid ice, cuz cold!
@simon6071
6 жыл бұрын
That's a false and sensational claim made by The Action Lab guy. It's not the right attitude when the subject matter is science.
@pacey4198
6 жыл бұрын
Pete Lorenzo liquid ice is water. Are you dumb?
@killerjilk
6 жыл бұрын
thomas: 'Tis sarcasm. He is making the argument sound ridiculous on purpose because it is.
@joemother3811
6 жыл бұрын
I poured red liquid salt on ice and it melted. Also melted my hand. Might need a certain type of salt to melt it
@Hi-il2yo
6 жыл бұрын
Tredon Aldridge or certain kind of salt
@TheActionLab
6 жыл бұрын
+Tredon Aldridge in that case, yes it melted ice😂
@joemother3811
6 жыл бұрын
Masked Wolf Legend that's what I meant
@joemother3811
6 жыл бұрын
The Action Lab lol
@ProPlayer-wq3nu
6 жыл бұрын
Hi
@a_Lemming
6 жыл бұрын
I thought the whole point was that saltwater is harder to freeze than freshwater. It doesn't warm it up. It just keeps it from freezing.
@leckel1996
6 жыл бұрын
Thats Not a Knife, This is a Knife This is exactly what happens. I've never heard anyone say salt melts ice.
@walkingdead171
6 жыл бұрын
Thats Not a Knife, This is a Knife thank you
@RandomPerson-oh6nj
6 жыл бұрын
Lucas Eckel Agreed, though my old science teacher told us repeatedly it melted ice when we had to figure out how to melt this huge chunk of ice in this weird group contest.
@AnthonyNewell91
6 жыл бұрын
He made a number of errors. The salt, ice, liquid water mixture is melting quicker and therefore gets colder relative to the salt-free mixture. Salt causes freezing point temperature depression, so now it's temperature is greater than it's freezing point temperature, so it melts. Melting is endothermic and the heat for this comes from its immediate surroundings, so it cools. It wouldn't melt as quickly had the freezing point temperature not been depressed by the salt. The red flag for the melting is the obvious increase in volume of liquid water and also the temperature drop yet he thinks that if it melts it must increase in temperature? Melting is just the phase change, solid to liquid. It can get colder and still melt due to the freezing point temperature depression. Attempting to decouple these without appreciating the actual cause for the temperature drop misses the point. The ice condensation forms on the outside of the glass because this is pure water, without the temperature depression which freezes at 0 °C, and the glass is colder than this. He confuses the point further by comparing it to dissolution of salt, which is also endothermic but this is an unrelated process to the freezing point temperature depression. It's heat of solvation, which is endothermic for sodium chloride, water mixtures but is exothermic for sulfuric acid/sodium hydroxide, water mixtures. The heat of solvation for salt in water is also much much less than the heat of fusion for the same salt:water/ice when mixed.
@ThePlowGuys
5 жыл бұрын
Freshwater will freeze at 32 F (0 C) Saltwater will freeze at 0 F (-18 C). Regular white road salt will melt road ice up to about -10 C. When it is colder you need to start using calcium chloride mix. This will actually heat the treated area allowing it to work in colder temperatures.
@SinjoroMoseo
6 жыл бұрын
Roses are Red Violets are blue *Salt melts ice* *but it doesn't **_heat it_*
@jcastprod
4 жыл бұрын
“Hey Siri...remind me to never use this video to teach science.”
@siyacer
6 жыл бұрын
1. You need a lot of salt. 2. Are you saying my whole life is believing salt melts ice?
@Terrabade
6 жыл бұрын
Corey Newhard It’s actually just the wrong type of salt.
@KuraIthys
6 жыл бұрын
Salt should cause the freezing point of water to drop from 0 degrees celsius to about -20 That wouldn't instantly cause melting though; heat still has to be applied. It does however mean anything in contact with it gets a lot colder, hence why it can be used to help make ice cream.
@anthonyz4541
6 жыл бұрын
When you add salt, that temperature drops: A 10-percent salt solution freezes at 20 F (-6 C), and a 20-percent solution freezes at 2 F (-16 C). On a roadway, this means that if you sprinkle salt on the ice, you can melt it. The salt dissolves into the liquid water in the ice and lowers its freezing point.
@BobMcCoy
6 жыл бұрын
*S a l t y i c e*
@jspr49
6 жыл бұрын
Bob McCoy *B O I*
@simon6071
6 жыл бұрын
Ice doesn't get salty. Even icebergs on the sea are formed by fresh water only. www.quora.com/Are-icebergs-made-of-fresh-water-or-salt-water
@watsupsupsupsupsups
6 жыл бұрын
F R O Z E N B O I
@JayV27
6 жыл бұрын
Ok
@sayeedhasan9341
6 жыл бұрын
B O I
@cyootlabs
6 жыл бұрын
"Salt doesn't melt ice." *throws salt on ice to melt it* "It's not actually melting." *throws salt into water and proceeds to explain exactly how salt melts ice*
@Broockle
3 жыл бұрын
there's many smart comments here you can feel free to read if you're confused by this.
@USBYDProductions
2 жыл бұрын
@@Broockle someones hurt
@Broockle
2 жыл бұрын
@@USBYDProductions o no
@IsYitzach
6 жыл бұрын
Melting is a phase transition, heat flow is irrelevant. Salt does melt ice by changing the melting point of ice. Adding salt to water drops the temp a little, as shown. Melting requires a lot of energy. By melting the ice without providing external heat, it doesn't get a little colder, it gets a lot colder. The latent heat of fusion is being pulled from the system itself.
@Fuzzybeanerizer
Жыл бұрын
This whole video is so misleading, hard to believe it was never taken down. You are exactly right about the tiny temperature difference from the salt dissolving, vs. the large amount of heat needed to melt ice. They are not remotely comparable, and if he thinks they are then he has a very poor grasp of what is going on.
@georgeday8808
3 жыл бұрын
Funny I can learn more from you in a day than going to school for 18 years lol
@jakeells66
Жыл бұрын
I've never understood why we salt roads and walkways. Yet we always put salt in our coolers for camping and it worked. This really helped and made a lot of sense. Thank you.
@hannaletzring4517
6 жыл бұрын
The salt just lowers the melting temperature of ice. It makes it so the ice will melt at colder temperatures. The salt itself does not melt the ice
@arisnv
6 жыл бұрын
KrazeeCookie ¿
@simon6071
6 жыл бұрын
+KrazeeCookie The salt does melt the ice due to the action of the salt ions on the polar molecules of the ice. Even though heat from the air is required for the melting of ice , salt's ability to turn the water into a super cold salt solution would speed up the transfer of heat from the air to the water and from the water to the ice tremendously. Therefore, it is justified to say salt melts ice just like t is justified to say a hair dryer drys our hair even though it is is just an appliance with the ability to transform electric energy from the power company to heat energy and kinetic energy for drying our hair.
@lorenzo42p
6 жыл бұрын
lolgaming if you make ice cold enough it melts. must be a buffer overflow in the matrix.
@simon6071
6 жыл бұрын
+logaming 323 Salt makes the surface of ice melt first and then the colder than air salt solution formed makes the remaining ice colder. However, the ice can continue to melt in spite of becoming colder because salt can lower the melting point of ice.
@mjames7674
5 жыл бұрын
Come on, people. In ice there are two processes going on, there is constantly ice turning to liquid (melting), and liquid turning to ice (freezing). Adding salt makes it so the liquid cannot _refreeze_ once it has _already melted_ (at the same rate that the ice without salt would melt). The salt is stopping the water from _refreezing,_ there was no increase in the rate at which the ice melts. Stopping water from freezing, and melting ice, are not the same thing. Sure, he's being a _tad_ (ok, maybe a tad more than a tad) over semantic, but it's for the sake of the video and lesson, and he's technically correct.
@neki134
6 жыл бұрын
I have never heard of salt melting ice
@lorenzo42p
6 жыл бұрын
if the ice with salt added were to melt there would be more water in the glass. funny, there's more water in that glass. the ice became water, but it didn't melt. magic?
@shawnrhode
3 жыл бұрын
Salt doesn’t melt ice, it lowers the freezing point of water. If you use rock salt, the external temperature needs to be warm enough to melt the ice, which leaves the resulting water getting colder and colder until a new equilibrium is reached which is much colder than the freezing point of non-salinated water. This is why it works for ice cream making. For walk ways, driveways and roads, sodium chloride doesn’t work very well for existing ice and snow because the ambient temperature isn’t high enough to facilitate the process. If you place it down before the ice or snow build up, it reduces the freezing temperature of water so it doesn’t freeze until it is colder. As you noted, this is why calcium chloride and magnesium chloride are better for existing ice and snow since they are exothermic and melt the existing ice and snow. Of course, if the outside temperature is well below the freezing point of water saturated with the salt in question, you won’t have any reaction and the salt will just sit there. This is because there isn’t a water layer if the air temperature is low enough.
@andromeda6309
7 ай бұрын
Salt decreases the tempature of the ice which is why it’s added to the bag ice cream method so that it cools down, but it also at the same time melts the ice. Salt can melt ice but cool it down at the same time. More specifically, salt lowers the freezing point of the water. Think about how cold it needs to get to freeze a beach, that’s because of the salt in the water.
@alejrandom6592
6 жыл бұрын
"Let's do Celcius for everyone"
@davidemersonpeters2794
3 жыл бұрын
What is a subscribe "buh an"
@marvalice3455
3 жыл бұрын
No
@zakmartin
5 жыл бұрын
Maybe I'm missing something, but you just proved that salt DOES melt ice.
@valeriobertoncello1809
4 жыл бұрын
No, ice melts itself, and it melts itself all the time. Ice is also constantly melted by air. You just don't see it because it almost immediately turns back to ice. Salt just hinders this process of water turning back to ice. He stated it clearly in the video. You could say salt _highlights_ the process of ice melting (due to air or due to itself), by keeping the melt ice in liquid form. But salt itself doesn't melt ice.
@pyroromancer
4 жыл бұрын
@@valeriobertoncello1809so by observation salt melts ice. but scientifically salt just slows or prevents water from refreezing
@madmaddox3451
3 жыл бұрын
Salt does not melt ice.... I did this science project in school. It doesn't it just makes it longer to melt
@zakmartin
3 жыл бұрын
@@pyroromancer That's merely a mechanistic explanation of how and why salt melts ice. The fact is, salt melts ice. How it does that is irrelevant in the context of the present discussion.
@pyroromancer
3 жыл бұрын
@@zakmartin w0t
@diederikvandedijk
6 жыл бұрын
3:31 "In order to melt ice you need to add heat to it" is just wrong! You just showed another way to melt ice. So let me explain what happened. You lowered the meltingpoint, so the ice melted at a lower temperature. "Melting" does not mean becoming warmer. It means turning from solid to liquid. Very disappointing video!
@nerys71
6 жыл бұрын
Excellent video as usual but I am confused on one aspect that might be a technicality the salt is melting the ice it's just not doing it exothermically it's doing it chemically or physically but the ice is going from solid to liquid and that is what melting is is it not? Or am I using the wrong definition of the word melting? It's just not melting via Heat
@TheActionLab
6 жыл бұрын
Yeah you are right, it’s just that the definition of melting in the dictionary is turning to a liquid by adding heat. But this video was more about learning why and how salt does what it does to solid water.
@nerys71
6 жыл бұрын
The Action Lab no you are correct I just looked up the word melting and it is to become liquid by applying heat I never knew that I always just thought of melting ass to go from solid to liquid it never dawned on me that the word melting actually dealt strictly with heat Learn something new everyday :-) one of the reasons I love this channel :-)
@gibberishname
6 жыл бұрын
I'm not sure if you're misunderstanding what "melting" means. Melting is not about temperature, it's about phase change. Raising the temperature is just one way to cause that phase change. Changing pressure would be another, as would LOWERING the FREEZING POINT (aka what salt does).
@reactive7748
6 жыл бұрын
Never been told that I already knew that salt lowered the melting/freezing point of water and Im 12
@XxHappygamerxX
6 жыл бұрын
No hate but you ised ice cream salt
@thetupolevtu-1602
6 жыл бұрын
Used*
@specializedchemicals6669
6 жыл бұрын
XxHappygamerxX 9933 Go back and read your sentence. There's kind of a typo.
@walkingdead171
6 жыл бұрын
Rock salt is also sodium chloride
@gavinjenkins899
6 жыл бұрын
So?
@sky0kast0
6 жыл бұрын
XxHappygamerxX 9933 ice cream salt is commonly rock salt Not shaker grade salt
@tylerbrinker6582
6 жыл бұрын
Did the ice melt quicker when you put salt on it? Yes it did. That means salt melts ice. Dont try to argue a stupid simple idea.
@tylerbrinker6582
6 жыл бұрын
David melting means to transform a solid to a liquid. salt speeds up and even induceds the transformation from waters solid form to its liquid form.
@tylerbrinker6582
6 жыл бұрын
David but if you put salt on ice while its in a freezer it can still cause it to melt therefore reversing the freezing with the only change of salt being added. Its Not just speeding up melting. Therefore my conclusion is salt does melt ice.
@tylerbrinker6582
6 жыл бұрын
So Mr. Logic 101 do you argee with me now.
@tylerbrinker6582
6 жыл бұрын
David yes you are correct salt does lower freezing temp therefore causeing ice to melt. The salt is a cause for melting and i will agree that it is also the evironment to. So the evironment causes ice to melt and so does salt.
@BlakeBigfoot
6 жыл бұрын
David if something causes something to happen faster then yes, it is what is causing it to occur. If the only difference between the constant and the experiment is the variable of salt, and the salted ice melts faster, then salt melts ice. It IS that simple, and even if we wanted to get into the semantics of why it may or may not melt the ice, that's not even what the Action Lab guy is arguing. The video makes the argument that the salt doesn't cause any solid ice to change to liquid water at all (as this would, by every definition, be melting), but that there's magic liquid water that makes up the outside of the ice cube that is then magically released when introduced to salt (despite the fact that salt supposedly doesn't melt said ice), which is all complete bs. Salt melts ice. It's not hard to understand and it sure as shit ain't that big of a deal.
@raiz1999
3 жыл бұрын
I'm confused, solid to liquid is a melting process. So if ice dont melt salt, how come they have more liquid than the ones that doesn't have salt?
@-a13x-75
6 жыл бұрын
Breaking bonds requires energy (endothermic) and forming bonds releases energy (exothermic). NaCl dissolves in the water absorbing the energy from the water making it cooler but it also releases energy when it undergoes ion-dipole bonds with the water but this is much lower than the energy absorbed so the energy absorbed outweighs the energy released. Since CaCl2 is strongly hygroscopic (wants to bond with water), the energy released during the hydration (ion-dipole bonds between the water and ions) is higher than the amount of energy required to dissolve the salt. NaCl just dissolves in the liquid water lowering the freezing point of that liquid water preventing it from refreezing. CaCl2 does the same but it just has the added benefit of releasing energy to directly melt the ice and then lower the water's freezing point.
@JohnSmith-qz4ki
5 жыл бұрын
Seems like all you did was prove that salt DOES melt ice!
@Broockle
3 жыл бұрын
there's many smart comments here you can feel free to read if you're confused by this.
@lieven1122
6 жыл бұрын
In my language melting is The process of a solid turning into a liquid This is true for salt and ice
@dailymotorshorts
6 жыл бұрын
Salt in Liquid Nitrogen!
@EpzilonZ
6 жыл бұрын
It wont dissolve
@vapenation7061
6 жыл бұрын
Nathan Dryer the most boring experiment ever
@anupamaryal3876
6 жыл бұрын
if ur reading and wondering what this video is about..... salt basically eats ice and makes it super cold so if u put salt on roads during winter it basically eats ice
@JacobTJ1
2 жыл бұрын
Does adding ice directly cause ice to melt? NO, does adding salt indirectly melt the ice? YES.
@jamesmayer5746
6 жыл бұрын
Salt doesn’t melt the ice it will make the ice’s melting point lower than 32 degrees Fahrenheit
@pacey4198
6 жыл бұрын
james Mayer thus, making the ice liquifi by means of heat. Which is the exact definition of "melt"
@Souls_p_
6 жыл бұрын
*0 degrees Celsius
@skolex3121
6 жыл бұрын
... making the ice _melt._ Because its temp is now above its melting point.
@Channel-zo4ps
5 жыл бұрын
THIS DUDE NEEDS TO STOP MAKING VIDEOS WITH *FALSE* INFORMATION Salt DOES MELT ICE. Salt LOWERS the FREEZING POINT of WATER.
@DestroManiak
6 жыл бұрын
Cool to know, but salt still melts ice.
@Broockle
3 жыл бұрын
there's many smart comments here you can feel free to read if you're confused by this.
@MahmoudMaguid
6 жыл бұрын
I'm still confused. So salt changes the freezing point of ice to something well below 0. So if its 0 degrees out there adding salt will turn the ice into very cold water. But there is a risk of creating very cold ice if the weather is cold enough right? I have a few questions: 1. Does very cold ice have different properties from ordinary ice? 2. Are we shooting ourselves in the foot by adding salt to ice by making the situation worse in the long run? 3. Does salted ice take even longer to melt compared to non salted ice on a regular day?
@SuperPhexx
6 жыл бұрын
To preserve Cross-Country tracks in weather above freezing they spread salt on the tracks causing it to get much cooler and thus get both firmer and last longer.
@robintaylor2808
6 жыл бұрын
Hey
@suhairawsaj3638
6 жыл бұрын
Cj taylor hello.
@midnightchaos4311
6 жыл бұрын
Hi
@TheActionLab
6 жыл бұрын
+Cj taylor hi
@joemother3811
6 жыл бұрын
Hi
@Alex632
6 жыл бұрын
Hey
@bpark10001
5 жыл бұрын
"Salt melts ice" because it lowers the freezing point. Ice is normally at about 32F or 0C. When salt is added, the mixture's melting point drops below that of the prevailing temperature. The ice melts, drawing heat initially from the surrounding ice and whatever else is in contact with it, causing the temperature to fall. The depression is proportional to the concentration of NUMBER of "particles" (molecules or ions) in the solution. Calcium chloride makes 3 ions per molecule dissolved (.04 moles/g), versus only 2 for sodium chloride (.034moles/g). Dissolving calcium chloride releases some heat (80Kcal/mole or 721cal/gram) but that is minor compared to the heat taken up by melting ice (80 cal/gram) because there is much more ice then CaCl2. When either is used to melt snow or ice outside, the bulk of the heat is gotten from the environment, if it is not too cold.
@Gay_Priest
6 жыл бұрын
My dad's logic: salt on the road produces liquid water runoff and reduces the amount of solid ice on the road, so he doesn't care if it's melting the ice or affecting the equilibrium, it results in less ice on the road so it's good enough for him
@tristanbyrd4128
6 жыл бұрын
Salt(NaCl) is the product of an ionic bond between sodium and chlorine. When ionic compounds are dissolved into water they interfere with waters ability to change is chemical form whether that means freezing it or boiling it. Disolving salt into water decreases its freezing point and increases its boiling point. Basically when they put salt in the roads. That snow/ice turns into water because the freezing point is lower allowing the water to be colder without freezing. Some people put salt in water before boiling it because it allows to water to heat to a higher temperature before it boils, but at the same time makimg the water boil faster because ionic compounds are good conductors of heat.
@shrimpshrimps5713
5 жыл бұрын
Salt Lowers the Freezing Point. In a nutshell, salt is a great ice melter because it causes “freezing point depression.” ... In its pure state, water freezes at 0°C or 32°F. By using salt, that freezing point can be lowered which forces the ice to MELT and prevents the water from freezing or re-freezing.
@HunterHM1489
6 жыл бұрын
Salt doesn’t “disrupt” the freezing. When dissolved, the total mixture has a lower freezing point. “Disrupt” would imply that it’s a chemical reaction. also, salt doesn’t “absorb heat“ as if it is a property of salt, but rather has a greater thermal density than water. Therefore, when mixed, the salt retains a higher portion of the total thermal energy within the solution. If you were to put salt into Mercury at the same temperature, it would not absorb heat from the mercury, because Mercury has a greater thermal density.
@codemans22
6 жыл бұрын
So ice in your esky is a valid way of making it colder.....but for longer? Does the broken down ice loose its cool quicker than in solid form?
@doyouknoworjustbelieve6694
5 жыл бұрын
Dissolving salt in water is endothermic. That’s why the temperature of salt in water or ice is lower than the temperature of unsalted water or ice. However, even as salt makes the water or ice temperature colder it lowers the freezing point of water. Therefore ice starts to melt even at the lower temperature.
@okaybro6727
3 жыл бұрын
Me: *DUMPS A WHOLE BAG OF SALT TO LARGE ICE* Also ice: AM WATAH Me: WAIT what THE FUCK
@Broockle
3 жыл бұрын
there's many smart comments here you can feel free to read if you're confused by this.
@okaybro6727
3 жыл бұрын
@@Broockle no really i dumped a whole salt to a Very large ice and it melted
@Broockle
3 жыл бұрын
@@okaybro6727 there is nuance to that tho, which makes it much more interesting. The salt dissolves with the liquid part of the ice which lowers its freezing point which makes it so that all ice that melts doesn't turn back to solid ice. So you end up with salt water that is much colder than its constituent parts. So the salt doesn't melt the water, rather the salt prevents the water from refreezing.
@carteron248
3 жыл бұрын
The salt making contact with the ice is creating a salt water solution which freezes at a lower temperature than tap water. This solution continues to melt the ice without lowering its temperature. This cold solution makes much more contact with the glass than the ice cubes in the control glass. More contact cools down the glass causing the condensation. Please tell me why I’m wrong.
@davidisthebeaest4074
3 жыл бұрын
3:03 YOU DIDN'T POUR IT ALL WE AINT DUMB
@KAMLOTTON
6 жыл бұрын
He should've just said that it's a common missconception that melting means just turning solids into liquids, while in fact the definition involves the use of heat...
@codemans22
6 жыл бұрын
I used to put it on the walk in freezer floor so the water did not freeze when cleaning it? See if you can freeze extremely salty water, what happens? and how easy does it absorb heat compared to normal ice? How much of the salt dissolves into the amount you measure at the end?
@davidpalos4989
5 жыл бұрын
Salt lowers the freezing point of water, so the surroundings would need to be much colder to freeze the water. Now, it is important to explain why it's not consider melting, and it has to do with the definition of the word. Melting means "becoming liquefied by heat." That is the reason why it is not melting (since heat is not increased), though it is liquifying due to the addition of the salt.
@SmileyManPrince
2 жыл бұрын
Believe it or not but Salt actually activates ice. Salt mix with ice increases the coldness of ice, but at the same time enough salt can deplete the ice because it’s using the coldness at a higher rate. Kind of like fire and gasoline. Ice is the fire and ice is the gasoline.
@shreeshmainde717
4 ай бұрын
thanks a lot sir i was so confused about this concept of depression of freezing point
@antonlasmarias6606
6 жыл бұрын
Actually as an alpine skier we use salt to make the snow harder when it's above freezing.
@joshyoung1440
3 жыл бұрын
James, you said it's not melting but rather cooling the ice. But from where I'm standing it looks like it's doing both by changing the freezing point of the liquid water.
@aebader
3 жыл бұрын
Fantastic explanation that is easy to understand. Thank you. I am excited to show this to my class.
@Kyleplaysgames567
2 ай бұрын
I've always wondered why salt can make ice colder like when they use rock salt to make ice-cream but they also use it to melt ice on the sidewalks. I figured it out, we all know that salt melts ice by lowering its freezing point. That why salt melts ice on sidewalks. However ice itself is actually a good thermal insulator while water is a good heat conductor. So when the ice melts, the water is still freezing cold which will conduct heat from things around it which is how they freeze ice-cream.
@MrEdrum
6 жыл бұрын
but if thomething is colder it means that it is absorbing more energy right, because it has to absorb the energy of the thermometer to cool it down. so i always thougt ice is either melting because it gets warmed up from the outside or the water itself has to take more energy from wormer places, wich feels cold. is this hypotheses also right or is it wrong or nobody knows if it is right because there are no experiments to test this???
@bennett3327
6 жыл бұрын
I rubbed salt and ice on my hand later I knew I screwed up my artist hands and in 3 days I’m on vacation
@HeisenbergADHDScienceAndMore
6 жыл бұрын
This property is called freezing point depression! The freezing point of water gets lower by the sodium chloride salt. Nevermind the piperine(pepper). We're only going to focus on sodium chloride(salt). Salt also raises the boiling point and it's called boiling point elevation. Calcium chloride is even more effective than sodium chloride because it lowers the freezing point even more. Other stuff you can use are vegetable glycerin, propylene glycol, and ethylene glycol.
@rockmcdwayne1710
3 жыл бұрын
I dont know how they do it in american schools but, if my memory serves me correct, it was taught to us in 6th grade chemistry lesson that salt LOWERS the freezing temperature of water around 10 degrees. If you have weather that is colder than -15C, salt has no effect other than making it harder for snow to pack together and form ice. And if it happens to get even colder than that (say -25C), then there is no point of using salt at all!
@pollyhart7989
6 жыл бұрын
So, what kind of salt gets put on roads to prevent ice from forming, and how does that work?
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