Answer:
Rising bread and Mixing Baking Soda and Vinegar
Step-by-step explanation:
Rising Bread
Bread rising is exciting, right? Not so much! However, not all chemical changes are exciting. While not thrilling, the yeast causing the bread to rise is a chemical change. Why? Well, yeast breaks the starches in the bread dough down into sugars, and those sugars metabolize into carbon dioxide and ethanol. The carbon dioxide makes the bread rise.
Mixing Baking Soda and Vinegar
If you mix an acid, such as vinegar, with a base, like baking soda, you’ll get a chemical reaction. In this case, it starts to bubble. This is a great way to create a homemade volcano.