Skittles: drop three or four into a cup of water. The "s" will float off after the candy shell starts to dissolve. (The edible ink is lighter than the water)
Place five different colors of skittles sorted into piles of 2 or 3 on a paper plate. Four on the outside, one in the middle. Pour warm water onto the plate and watch the colors start to dissolve into the water. The colors do not mix due to water stratification (water with different properties do not mix)
Each table needs paper plate, cup with warm water, and candy mnms, skittles, and gobstoppers
(2) Goblin's Brew
Read paragraph from Goblin's in the Castle. We are going to experiment with Goblin's favorite drink. Pass out metal tray, cup with T baking powder, cup with vinegar. On the go pour vinegar into empty cup and watch it overflow.
What's happening:
Baking soda and vinegar react with one another because they both have a lot of energy that they don't want and they can help each other get rid of it!
Baking soda is a base, and vinegar is an acid. An acid is a chemical that wants to get rid of a proton, or a positively charged hydrogen atom. A base is a chemical that wants a proton. When you mix an acid with a base exciting things can happen because the acid (pitcher) is ready to give away its proton and the base (catcher) is right there to receive it!
When we mix baking soda and acetic acid in water together, acetic acid gives its proton to the broken-apart baking soda and together they form sodium acetate (CH3COONa), water (H2O), and carbon dioxide (CO2). These products are created quickly, and the carbon dioxide comes out as a gas, so the whole event is spectacular as you've seen!
(3) Melting Gravestones
Empty metal trays and pour about 1/2 cup acetone into the tray. Pass out gravestones and let kids watch them disappear!
