Make a baking powder mixture by placing 1/4 teaspoon of cream of tartar, 1/4 teaspoon of baking soda, and 1/4 teaspoon of cornstarch and in a cup. Use a popsicle stick or plastic spoon to thoroughly ...

Students will observe that baking soda produces more bubbles than baking powder when mixed with vinegar, which is evidence that the two substances are chemically different. Students conclude that ...