how does this man not have a Nobel peace prize he has saved the results of so many students😭😭
@jinhongouyang8166
2 жыл бұрын
he deserves it! he potentially decreases the unemployment in Britain, and makes more people well educated
@ravenevermoree
4 жыл бұрын
The meeting place for Brits from all over
@Danooooooooo
4 жыл бұрын
Worldwide
@anuaravind3188
3 жыл бұрын
yup....i have my gcses next year
@redsalmon3708
3 жыл бұрын
And lol not just Brits, ppls who r doing their igcses
@zafranakram3098
3 жыл бұрын
Newcastle
@zafranakram3098
3 жыл бұрын
@@anuaravind3188 this yr lol
@maddyg4318
7 жыл бұрын
i would die for you freesciencelessons
@arulgk9673
5 жыл бұрын
maddy g How can u say that? He makes these videos to keep u alive, not die :)
@fancy4458
4 жыл бұрын
@@arulgk9673 deeeeep
@invincibleam17
4 жыл бұрын
i will sacrifice my life...
@phase0400
3 жыл бұрын
@@invincibleam17 Easier said than done.
@first5minutes582
5 жыл бұрын
WOW you did this in just under 5 min and my chemistry teacher waste 2 months of our lives just on electrolysis
@kiranranpuria933
5 жыл бұрын
At least ur chemistry teacher showed up for 2 months
@talialeoni-peters9758
4 жыл бұрын
Kiran Ranpuria hah same! My teacher hasn’t been in for 2 months🤣
@fancy4458
4 жыл бұрын
@@kiranranpuria933 llooll
@athdasaeed3677
2 жыл бұрын
Mine just waffles on about cats onions and mash
@jackotgould
2 жыл бұрын
@@athdasaeed3677I have MASH, BASHO and CASHOCO from my teacher 🤣
@nazmaakhtar5594
7 жыл бұрын
will you please go through some higher paper exam questions for biology, physics and chemistry as I think it would really help if we got a taste of how to answer them
@a_h5876
5 жыл бұрын
nazma akhtar agreed
@samuelayandokun4634
Жыл бұрын
Buy his revision workbook
@maddie_1122
5 жыл бұрын
I've learnt more in this 4:41 video than 2 weeks of my GCSE Chemistry class.
@azreenkarim7777
Жыл бұрын
try 2 years \
@zabbs
4 жыл бұрын
This is the only channel I watch without an adblocker
@_hg4rr
Ай бұрын
😂😂
@hxmza5538
5 жыл бұрын
The time now is 8 36am of 16th of May which is when I have my gcse chemistry exam today at 1 30 😭😭 procrastination at its finest 😂
@Sabrina-xf7ve
5 жыл бұрын
Hxmza N how did it go?
@achoo3001
4 жыл бұрын
i hope you did well :)
@fireemperorzuko8756
4 жыл бұрын
@@Sabrina-xf7ve they never answer..
@prabhleenatwal6230
4 жыл бұрын
@@fireemperorzuko8756 yes they don't
@phase0400
3 жыл бұрын
@@prabhleenatwal6230 The answer, the answerr, the answerrr.
@itzforsaken9228
5 жыл бұрын
This is what our teachers want to say but don't know how to explain to us. Thanks bro idk what i would do without you!
@MuneeshRehal
6 жыл бұрын
Some very tough content made very easy by you. Your a great teacher and you're videos are extremely helpful. Just wondering where can I get the revision workbook from.
@Freesciencelessons
6 жыл бұрын
Hi. Thanks for the comment, I appreciate it. I'm currently redoing all of the videos for the 9-1 spec and those need to be finished by June 2018 (and I am on track for that). Then I can start to produce the workbooks.
@MuneeshRehal
6 жыл бұрын
Thanks thats greatly appreciated
@Aman-ge1tp
3 жыл бұрын
@@Freesciencelessons why does water form as well at the anode?
@pablosoto7958
2 жыл бұрын
@@Aman-ge1tp because water is produced my dude
@pepsimann2038
2 жыл бұрын
@@pablosoto7958 very helpful my guy
@AB-fr1sx
5 жыл бұрын
My man deserves my first born child
@fireemperorzuko8756
3 жыл бұрын
He ain't tryna catch a case stillllll
@elanax1218
3 жыл бұрын
😭😭😭lmfao
@imogenhollins5173
4 жыл бұрын
OMG that tie legit gives me lifeee!!!! i love it
@adamwillett1982
3 жыл бұрын
This man here helped me to get 8,8,9 for triple science mocks. If u are new to his account u need to watch all his videos. Trust me
@A.S_05
3 жыл бұрын
this man deserves more recognition because of his videos i finally understand electrolysis
@randomviewer1285
7 жыл бұрын
Can't wait till you do physics and Biology you're literally the saviour of most peoples grades you make everyone smarter and boost them to an a* (9) thank you
@fireemperorzuko8756
3 жыл бұрын
A* is 8 btw A** is 9
@abigailk6500
Жыл бұрын
@@fireemperorzuko8756back then it was a* for a 9
@mikeroch5772
7 жыл бұрын
You are so cool man I would die without ur help
@fancy4458
4 жыл бұрын
Woahh
@marianmwendamberi6336
6 жыл бұрын
Extremely good love your videos very simple straight to the point ,GOD BLESS YOU
@bossman69bossman32
2 жыл бұрын
im gonna be sitting my gcse exams next year and when I do my exams I will come to this exact video to comment my results. I shall be in the guiness book of records for the first person to ever respond to comments asking my results ;).
@erenskasa4970
2 ай бұрын
hey man! what were your results!?
@jaylakayalah5798
5 жыл бұрын
wow how did i just discover this guy he's brilliant!!!
@riddamazhar3466
7 жыл бұрын
I love your videos as they are super helpful. Thank you so much.😊
@a88a52
2 жыл бұрын
No joke this guy needs an award
@indielife192
4 жыл бұрын
when shaun does a several part video. thats as exciting as it gets folks!!!😎 who is watching during covid?
@fancy4458
4 жыл бұрын
Mee
@LemonApplePear
Жыл бұрын
You should be knighted! You must have put in so many hours of your time to help students you dont even know. Very Cool :)
@gracielikesu
5 ай бұрын
gcses are in a week fml
@nicolejasen7700
6 жыл бұрын
You seemed to have missed out the electrolysis required practical?
@gunna_enjoyer
Жыл бұрын
Bro be teaching better than my actual teacher
@amayaiglesias862
10 ай бұрын
my man reteacheing me electrolysis bro my teacher could actually never. my pookie here saving lives 😞
@ollie3784
4 ай бұрын
Hello Sir, I was wondering at 3:57, where is the sulfur part of Copper Sulfate is now? Is it just in the solution or something? Thank you so much though, I've finally understood more about electrolysis because of you 💖
@Freesciencelessons
4 ай бұрын
The sulfate ion remains in solution and forms a weak solution of sulphuric acid (H2SO4).
@jollypp4203
6 жыл бұрын
I don't understand the half equations. How can we know how many electrons are lost or gained?
@vntj316
5 жыл бұрын
from their valencies
@robertharrison3313
5 жыл бұрын
JollyPP its all to do with the charge
@elliottcooksey6886
5 жыл бұрын
The charge of the ion.
@eviehooper7977
6 жыл бұрын
How will I know, in the exam, what the ion numbers are for each ion?
@sevilaybatmaz4767
4 жыл бұрын
For the hyrdroxide u just have to memorise it
@itsanna3
6 жыл бұрын
why is the half equation for the anode OH-? where did the hydroxide come from if oxygen forms at the anode
@sevilaybatmaz4767
4 жыл бұрын
Hydroxide ion comes from the water H2O -> OH- + H+ . When it is discharged at the anode, it forms oxygen and water. 4OH- - 4e- = 2H2O + O2
@india1846
4 жыл бұрын
Water produces hydrogen, its a bit late I say that now though seeing as you asked last year lmaoo
@oscarshalson4557
4 жыл бұрын
water contains hydrogen and oxygen which comes from the aqueous solution
@josephlangham3884
4 жыл бұрын
khar it’s because water is released as well as the oxygen gas but the water just lowers the concentration of the solution, so it’s not mentioned as a released product
@ilsashamsi7815
4 жыл бұрын
I c u army ;)
@betsy_8204
5 ай бұрын
Our national treasure ❤
@t.4861
4 жыл бұрын
Dear Shaun You have helped thousands of students get higher grades and i was class of 2020. Passed my science mocks. Thanks to you. Not only me but thousands of students. So thank you for being the reason we pass science and get a science a level good sixth form choices. Thank you Shaun May your soul rest in peace 🙏🕊😭 #Rip_Shaun
@fireemperorzuko8756
4 жыл бұрын
He's alive, he literally made a video 4 days ago. Don't do that shit bruh hes literally saving lives and changing them I swr my heart dropped when I read this don't spread fake info
@ibzinoproductions184
7 жыл бұрын
I love your content
@user-or1tp5bo5q
6 жыл бұрын
When will the revision workbook be out? I'm doing the 2019 exams in summer, will they be out by then?
@Freesciencelessons
6 жыл бұрын
Yes I'll be releasing Chemistry 1 soon.
@OfficialMadoc
2 жыл бұрын
i would pay money to see this man at a meet and greet
@ellansa4178
7 жыл бұрын
this man is a legenddd
@nadine7030
Жыл бұрын
just wanted to say may god bless you save me in all my sciences
@Localguitarman
5 жыл бұрын
god bless this man
@alinawaz1091
6 жыл бұрын
love your videos Keep up the great work !!!!!!!!
@tedt
Жыл бұрын
This guy is the top geeza. Thanks mate
@deerosete8117
3 жыл бұрын
"You all have lost chunks of learning time..." Me: [Panik] Freescience: I gotcha Me: [Kalm] "... so we are considering removing Triple." Me: [Panik]
@tris286
2 жыл бұрын
me frantically watching all his videos before my exam tmr💪💪
@evezbde6529
6 жыл бұрын
How can aluminium and copper be formed at the cathode when copper is less reactive than hydrogen, but aluminium is more? AND How can metals more reactive than carbon be extracted by electrolysis when they're more reactive than hydrogen too? Any help would be greatly appreciated :)
@walidhussain7396
6 жыл бұрын
Eve Zbde done with oxygen instead, e.g. aluminium oxide
@mms3106
2 жыл бұрын
The aluminium oxide is not an aqueous solution so it isn't mixed with water and there aren't any hydrogen or hydroxide ions.
@A_-.328
Жыл бұрын
aluminium oxide reaction was not in an aqueous solution it was molten. The rules regarding the reactivity series in the video only apply to aqueous solutions
@madasgdwg6552
4 жыл бұрын
I'm watching your playlist dawg for my cxc thanks g
@marthaseeney5702
5 жыл бұрын
Still so helpful in 2019
@zara8014
4 жыл бұрын
2020 too
@RandomGuy-qt1nf
4 жыл бұрын
U think the rules of chemistry changes every year? Lmao
@fancy4458
4 жыл бұрын
@@zara8014 yeah!
@ali.mp3410
3 жыл бұрын
2021 too
@TamilEelam1
2 жыл бұрын
@@zara8014 No exams 😂
@fivestar.09
Ай бұрын
what a legend, but im still slightly confused, so hydrogen is discharged (at the cathode) if the metal is more reactive than hydrogen, but what about at the anode? When does hydroxide get discharged?
@Freesciencelessons
Ай бұрын
The hydroxide gets converted to oxygen (which is discharged) and water. However, if a halide ion is present (such as chloride), then the halogen is discharged at the anode, rather than oxygen.
@fivestar.09
Ай бұрын
@@Freesciencelessons ah, thanks alot
@nisalperera1868
Жыл бұрын
Really helpful! Hope more people knew about this
@emaan_21
6 ай бұрын
Sir, I have a question, in 4:00, where is the sulfur, is it displaced in the reaction ?
@Freesciencelessons
6 ай бұрын
No it simply remains in solution as the sulfate ion.
@dylangrayson7682
3 жыл бұрын
This guy is such a legend holy shit
@dexpuma
6 ай бұрын
when nickel is more reactive than hydrogen then how is nickel salt electrolysis possible ?? shouldnt we get hydrogen on the cathode??
@victoriaraulet3859
2 жыл бұрын
sorry but i dont understand why hydrogen would be produced first at the cathode if it is less reactive than the metal ,as this would mean it would react slower therefore it would be harder for hydrogen to gain the electron
@Freesciencelessons
2 жыл бұрын
Sorry for the late reply. At the cathode, elements accept an electron (ie are reduced). Very reactive metals such as sodium LOSE their outer electron very easily, so it's very hard to then put an electron back on at the cathode. Hydrogen (from the water) will accept an electron more readily than reactive metals, so if we electrolyse an aqueous solution containing a reactive metal, we get hydrogen reduced at the cathode rather than the metal.
@mika1057
4 жыл бұрын
Hello sir, How are we meant to know the reactivity series for the hydrogen being produced at the cathode?
@litmuesli6490
7 жыл бұрын
Super helpful videos, thanks!
@aaronjoseph4549
4 жыл бұрын
To sacrifice my life for Free science Lessons
@overpowered5919
4 жыл бұрын
finally I get this topic thank you sir
@Lm0i7-i3u
3 жыл бұрын
can someone help, i dont understand the half equation at the anode. Why are the number in front like that specifically like why is it 4OH-
@minitrix1579
4 жыл бұрын
the smile at the end is awesome xD
@Anush_Sivakumar
3 жыл бұрын
is there a donation link where i can donate this man he is a legend p.s - i wont be able to buy his books
@zn8184
5 жыл бұрын
How do you know what the ion is for each element? For example, how do you know copper has a 2+ ion?
@wtseg6533
5 жыл бұрын
copper has two electrons in the outer shell. when it forms an ion, it loses the two electrons to gain a full outer shell, giving it a 2+ charge, so it becomes positively charged.
@user-xd4sk4pk7h
4 жыл бұрын
Some you can work out from the periodic table others you have to learn- eg transition metals
@itstheguy..4036
3 жыл бұрын
Great video sir! How did you get the half-equation at the anode? I don't understand.
@Freesciencelessons
3 жыл бұрын
Remember that the non-metal ion loses electrons at the anode. So for example the chloride ion is Cl-. This loses one electron ie Cl- - e- ----> Cl However elements such as the halogens (eg chlorine) form molecules with two atoms covalently bonded (these are called diatomic molecules). So we need to double the equation to show this ie 2Cl- - 2e- ----> Cl2
@itstheguy..4036
3 жыл бұрын
@@Freesciencelessons oh ok thanks sir, but i was asking about the half-equation at the anode here 3:43
@Freesciencelessons
3 жыл бұрын
Water naturally ionises to form hydrogen ions (H+) and hydroxide ions (OH-). The hydroxide ions are oxidised at the anode (ie lose electrons) to form oxygen. I would recommend learning that equation.
@zecdi
3 жыл бұрын
@@Freesciencelessons why is it 4OH- though ?
@stardreamix786
2 жыл бұрын
@@zecdi as if u did OH- by itself, the products don't look right (at least what i think) i am still confused too, but i'll just remember 4OH-
@mattie_sizer7187
3 жыл бұрын
hello sir, i was wondering, how do you know what the copper sulfate solution forms, how do you know what ions they form and do we just have to simply learn them or is there a way of knowing?
@athdasaeed3677
2 жыл бұрын
You have to just memorise them
@roarroon1666
5 жыл бұрын
Why can water electrolised if it has a covalent bond?
@Freesciencelessons
5 жыл бұрын
Because a tiny fraction of water molecules ionise to form H+ and OH-
@tayacarver5077
5 жыл бұрын
So if the hydrogen ions do not go to the cathode then where do they go ?
@Freesciencelessons
5 жыл бұрын
They simply remain in the solution.
@nazeerahmed1230
6 жыл бұрын
really helpful
@aniawo5119
Жыл бұрын
Sir, may I ask a question? Why less reactive copper gets reduced on cathode? Why not more reactive hydrogen gets there first and get into reaction on the cathode? I don't get it, not logical to me 😔
@Freesciencelessons
Жыл бұрын
Hi. Sorry for the very late reply. When metals react, they lose electrons. Reactive metals such as sodium lose electrons very easily whereas less reactive metals such as copper do not. In electrolysis, electrons move from the cathode onto metals (or hydrogen). It is easier to transfer an electron ONTO a LESS reactive metal than onto a more reactive metal (since they tend to lose electrons). Hydrogen is more reactive than copper, so hydrogen is more likely to lose an electron than copper. This makes it easier to transfer an electron ONTO copper compared to hydrogen.
@marymmoon1190
Жыл бұрын
how do u know SO4 is 2 minus is it one of those ones where u just got to accept it?
@hai_no_tenshi186
2 жыл бұрын
Hello to all those here the night before chemistry gcse 2022
@Doodo981
5 жыл бұрын
Do we get the reactivity series in the exam or do we have to remember that copper and silver is less reactive than hydrogen
@alexireade3408
5 жыл бұрын
Bradley Morris remember it
@reuben6896
5 жыл бұрын
we do
@amelie574
4 жыл бұрын
remember it like this: please (potassium) stop (sodium) calling (calcium) me (magnesium) a (aluminium) careless (chlorine) zebra (zinc) instead (iron) try (tin) learning (lead) how (hydrogen) copper saves (silver) gold and then platinum is last so you just have to remember that one😂
@lucahervada3697
5 жыл бұрын
CHEMISTRY TOMRROW ANYONE??
@mohid9843
5 жыл бұрын
may i ask....will we be given the reactivity series in the exam? thanks :)
@Freesciencelessons
5 жыл бұрын
You are not given the reactivity series in the exam. I would recommend that you watch my video on the reactivity series as it tells you what you're expected to know (you do not have to learn the whole series).
@acr7780
6 жыл бұрын
Sir, please help. I am struggling to understand why Oxygen is produced at the anode, and not sulfur.
@Alex-mo5tz
6 жыл бұрын
ACR It's because oxygen is always formed unless the non-metal is a halogen (from group7). Sulphur is not in group 7 so oxygen is formed instead
@abc12369
6 жыл бұрын
Alexandra cheers 👌👌👌
@BladerINCThe_Hope
6 жыл бұрын
Alexandra another thing is, if the anion is more reactive than Hydroxide than Oxygen will be produced, but if it is less reactive than the anion will be produced...
@girlthatcooks4079
5 жыл бұрын
@@BladerINCThe_Hope how do we know if it's more of less reactive than hydroxide
@maariyamahmood3636
6 жыл бұрын
what happens to the sulfur in the electrolysis. if copper is produced at the cathode and oxygen at the anode, where does sulfur go
@anonymousog9608
6 жыл бұрын
maariya Mahmood The sulphur remains in the electrolyte
@yaziz8687
6 жыл бұрын
do you know why sulphur remains in the electrolyte and why oxygen is at the anode instead?
@Name7.62
5 жыл бұрын
@@yaziz8687 Basically sulfur remains in the compound SO4 (sulfate) it doesn't split. As sulfate is a compound and not a halide ion, it's therefore not produced at the anode. Also, if you're wondering where the oxygen actually comes from, it's from the OH- ions (not the SO4) which explains how water is formed also.
@TheWiseSheepGaming
6 жыл бұрын
DU IST EIN LEGEND!
@Joe-he9fq
6 жыл бұрын
TAHUBLAD Its “bist”
@eannamcnamara9338
4 жыл бұрын
I want to ask in the comments. Why is O2 produced at the anode. Should it not by hydroxide or sulfate not oxygen. Thanks in advance!
@Freesciencelessons
4 жыл бұрын
The oxygen is produced from the hydroxide ions which are released when water molecules ionise.
@simranhans8806
7 жыл бұрын
Hi sir I don't get this. What eventually happens to a gas if its pressure is increased?
@Freesciencelessons
7 жыл бұрын
It will turn into a liquid. As the gas molecules get close, intermolecular forces establish and they condense (as long as the pressure is kept high).
@simranhans8806
7 жыл бұрын
Thanks sir, just quickly, what is the pressures name?
@Freepalestinefromisnotreal111
2 жыл бұрын
Sir,what happened to the the sulfate at the end?
@DhanaCorpuz
6 жыл бұрын
So the sulphur from the sulphate can't be extracted using electrolysis?
@nikkfoodz285
2 жыл бұрын
Hi, can u please tell please tell which gas bubbles after some time at +ve electrode during electrolysis of Conc. NaCl??
@amelie574
4 жыл бұрын
if anyone needs to remember the relativity series remember it like this: please (potassium) stop (sodium) calling (calcium) me (magnesium) a (aluminium) careless (chlorine) zebra (zinc) instead (iron) try (tin) learning (lead) how (hydrogen) copper saves (silver) gold and then platinum is last so you just have to remember that one😂
@aperson5261
4 жыл бұрын
Thanks that was actually helpful
@aperson5261
4 жыл бұрын
The platinum one 😂
@amelie574
4 жыл бұрын
@@aperson5261 ahah, my chem teacher taught my class that! it’s the only way i can remember it😂
@dann7598
4 жыл бұрын
What about lithium??
@tasfihaislam3673
2 жыл бұрын
what happens to the hydrogen if it is not reduced?
@Name7.62
5 жыл бұрын
Hi sir, I really can't understand why we produce water at 3:48- I understand why oxygen is produced and that the OH- is from the water but I just cannot for the life of me work out how the water is made- sorry to be a pain.
@Freesciencelessons
5 жыл бұрын
You don't need to understand exactly how the process takes place, only the equation that I show at 3.48.
@Name7.62
5 жыл бұрын
@@Freesciencelessons Ok that's great, thanks for the quick reply. I just want to thank all your hard work and perseverance to create these videos, yesterday I did my biology mock exam and I can honestly say it was by far my best mock, which is great considering it was previously my worst subject.
@Freesciencelessons
5 жыл бұрын
Thanks. I'm glad that the videos are helping. Good luck with all your mocks.
@sevilaybatmaz4767
4 жыл бұрын
@@Freesciencelessons so we have to just memorise that hydroxide equation? :(
@jamessykes8756
6 жыл бұрын
Do we just need to learn that a sulfate ion is 2 minus or can this be worked out?
@biancamarhwe2448
2 жыл бұрын
this guy has saved my life.......omfggsf
@choojunwyng8028
4 жыл бұрын
Why does the Hydroxide ion react with the anode but not the sulfate ions?
@rajshus1971
5 жыл бұрын
Thank you so much.
@haroonali9758
4 жыл бұрын
Why is the layer of Copper metal needed around the cathode?
@Ahmed-kh5xp
3 жыл бұрын
ill donate my left and right kidney to you
@simrett149
3 жыл бұрын
how do we know that the OH- ions are discharged instead of the sulphur ions?
@monaelashry3952
3 жыл бұрын
THANK YOU SOOO MUCHHHH
@Mrslovetomatoes
5 жыл бұрын
why are oxygen and water produced at the anode? What happened to the sulfate ion?
@sevilaybatmaz4767
4 жыл бұрын
The sulfate ion stayed in the solution
@sevilaybatmaz4767
4 жыл бұрын
Oxygen and water are produced from the hydroxide ion
@soham7316
3 жыл бұрын
what is left behind in the container after the copper and oxygen is out? I'm thinking sulfuric acid?
@Freesciencelessons
3 жыл бұрын
That's correct.
@itsmeyourdad3021
2 жыл бұрын
you're amazing
@leenaelsharif1374
2 жыл бұрын
thank you so much you saved me
@leenaelsharif1374
2 жыл бұрын
now i understand more about it for my chemistry mocks
@aides886
3 жыл бұрын
MAKE SURE TO LIKE THE VIDEO GUYS
@al-farsi6018
5 жыл бұрын
your the best
@noneete
11 ай бұрын
Are we meant to know the charges of an acid
@kopy5812
6 жыл бұрын
Sir, at 2:55 i looked through every electrolysis video on your channel, yet still have not seen an explanation on why oxygen is formed at the anode rather than the sulfate.
@Freesciencelessons
6 жыл бұрын
It's fully explained in this video GCSE Science Chemistry (9-1): Electrolysis of Aqueous Solutions 2
@kreemy123
5 жыл бұрын
amazing 10/10
@Haha_27
2 жыл бұрын
GCSEs in an hour nd I haven’t done half of the topics :(( I revised more for my mocks 🥲🥲🥲
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