Have you ever added vinegar to baking soda? It causes an immediate chemical reaction- turning into sodium acetate, carbon dioxide and water. The carbon dioxide is what causes all of the bubbles and foaming- and it's the basis for our edible experiment from Kitchen Science class. We made Lava Candy. You can do this at home too- it involves cooking sugar, so adults need to stick close by and lend a hand.
Begin by covering a cookie sheet with foil and spraying the foil with cooking spray.
In a medium saucepan add 1 cup of sugar, 1 cup of dark corn syrup and 2 tablespoons of white vinegar. Cook over medium high heat, stirring constantly until the mixture hits 310℉ on an instant read candy thermometer.
Remove the pan from the heat and stir in 1 tablespoon of baking powder. The mixture will begin to foam up. Dump it out of the pan and onto the cookie sheet. It will spread out on its own- don't spread it out or you will loose your air bubbles.
After about 30 minutes it will have cooled and hardened. Break it into pieces, take a good look at the air bubbles left behind by the carbon dioxide and eat your candy!