How does baking soda make biscuits rise?

Baking soda is a leavening agent, meaning it helps baked goods rise. Here's how it works in biscuits:

1. Reaction with Acid: Baking soda is a base. When mixed with an acidic ingredient (like buttermilk, sour cream, or lemon juice), it undergoes a chemical reaction.

2. Carbon Dioxide Production: This reaction produces carbon dioxide gas. Tiny bubbles of carbon dioxide become trapped within the biscuit dough.

3. Expansion and Rise: As the dough bakes in the oven, the heat further activates the reaction, creating even more gas. This expansion of the gas bubbles causes the biscuit to rise.

Important Note: Baking soda needs an acidic ingredient to work properly. Without an acid, it won't produce enough carbon dioxide to make the biscuits rise effectively.