Video Description -- Bubble Wand, Square Bubbles, Cube Bubbles and Bubble Catch
Materials
• 1 large container for soapy water
• Soapy water
o 32oz Dawn for every 5 gallons (640oz) of water OR 1 part Dawn to 20 parts water
• Cube wand -- this can be bought online or can be made using straws/pipecleaners and tape.
• Pipette
• Scissors
• Pipecleaners
• Cotton gloves/socks
Prep
• With your scissors, cut the bulb of your pipette in half (perpendicular to the pipette). You should have a bowl shape piece of plastic you can now recycle. The other side will be what you use to blow through (so make sure it's clean).
• Mix 20 parts of water to 1 part of Dawn.
Procedure
1) Bubble Wands
a. Bend pipecleaners into different polygon shapes. Make sure to leave a handle.
b. Wrap the bent end of the pipecleaner around your "handle"
c. While holding on to the handle, dunk the shape into the bubble solution.
d. Pull it out and check for a bubble. If there's a bubble, slow blow out into the bubble to make it come out.
2) Square/Cube Bubbles
a. To make a Cube Frame
i. The one in the video was purchased from Steve Spangler's site.
ii. You can also make one using pipecleaners/straws by making a cube shape. You can use tape, clay, and even have your material wrap itself so that you make a cube shape. Make sure to leave one for the handle.
b. To make the square bubble
i. While holding on to the handle, dunk the wire cube into the bubble solution.
ii. When you pull the cube out, you might have a square bubble inside. You can flip the orientation of the bubble by quickly jabbing the cube in the direction you want the square to go.
c. To make a cube bubble
i. Dunk the wide open end of the cut pipette inside the bubble solution.
ii. Place the now bubbled end of the pipette close to the square and blow out a bubble.
iii. Shake the new bubble off your pipette so that it lands on the square bubble. The new bubble should merge with the square and make a cube.
iv. To inflate the cube, blow out any residual bubble from your pipette.
v. Carefully insert the thick end of the pipette into the square bubble.
vi. Gently blow inside to expand your bubble.
3) Bubble Catch
a. Wear cotton gloves/socks over your hands.
b. Make a bubble (you can use the bubble wand or cut pipette).
c. Shake it off so that it starts falling.
d. Gently place your cotton covered hand underneath. You can now catch the bubble and toss it around.
e. Make sure not to touch the outside of the glove too much otherwise the oil in your hands will rub off on top. This can led to bubbles popping all the time.
4) Experiment
a. Do all shapes make spherical bubbles?
b. How does heat affect bubbles?
c. How do dry/wet conditions affect bubbles?
d. What other shapes of bubbles can you make and how many bubbles does it take to make it?
e. How long does a bubble last on a dry hand? How about a wet hand? How does it compare to a gloved hand?
Science
• Soap molecules have two ends. One is hydrophobic (water-fearing) while the other is hydro-philic (water-loving). In this way, when you're washing dishes, one side clings to the dirt while the other clings to the running water. This is how soap cleans.
• Bubbles are made up of three thin walls. The wall in the middle is water while the walls around it are soap molecules. The hydrophilic (water-loving) side of the soap molecules will attach on either end of the water molecules.
• Water loves to stick to itself. When you stretch out a bubble, such as by blowing into it, the air pushes in and stretches the bubble. There's always tension though since the water molecules' attraction to itself will constantly tug.
• The tension is part of the reason a bubble is always spherical. The air inside a bubble takes up space. Out of all the shapes, a sphere uses the least amount of surface area for the same volume. The sides will push into itself with equal force. With all the sides of the bubble in equal and constant tension, a sphere is made.
• When two bubbles meet, the surface area rule still takes into effect. The walls of the bubbles will merge together. If they're equal sizes, the walls that merge become a flat side. If one bubble is bigger than the other, the smaller bubble will bulge inwards. With this concept in mind, you can make many different shape
• The force you use to change the orientation of the bubble causes the bubbles to move out of their original position and towards where you pointed your force to. When the bubble comes back, they will stay in that new position.
• Use detergent if you use tap water for the bubbles. Glycerin can also be added for some extra strength.
• Bubbles will pop easily on your hands if you have dirt or oil on them. Why is that?
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