· Baking soda
· Dish soap
· Waterproof snowman accessories (beads for eyes, orange foam paper for nose, twigs for arms)
· Food colouring to decorate (optional)
What to do:
1. Mix together 2 cups of baking soda and 2 tablespoons of salt in a bowl. If you would like to add food colouring, you should do it during this step.
2. Add 1 teaspoon of soap and mix the dough well. It should look and feel crumbly.
3. Now add 8 tablespoons of water. If you are able to roll your dough into a ball, it is ready to go! If it still feels a little dry, add another tablespoon of water.
4. Create your snowman with the dough. Don’t forget to add his eyes, nose, arms, and anything else that you would like.
5. Once you have finished making your snowman, make a prediction of what you think will happen when you pour the vinegar over him!
6. Once you've made your prediction, add the vinegar using a squeeze bottle, or measuring cup. Watch your snowman foam before your eyes! The more vinegar you use, the more foam it will create! Was your prediction correct?
7. Dig through your foaming snowman to gather all your snowman accessories and do it again!
Why does this happen?
· When an acid (vinegar) is poured onto a base (baking soda), it creates carbon dioxide gas.
· This reaction causes the foaming and fizzing that you see!
For more information and pictures, you can visit http://www.funathomewithkids.com/2013/12/foaming-dough-recipe-magic-foaming.html.