Is raising cake batter chemical change?

* Ingredients React: Baking powder and baking soda are the common leavening agents used in cake batter. These ingredients react with moisture and heat to produce carbon dioxide gas.

* Gas Formation: The carbon dioxide gas gets trapped within the batter, causing it to rise and become light and airy.

* Irreversible Change: The original ingredients (baking powder/soda, flour, sugar, etc.) are transformed into new substances (carbon dioxide, cooked flour, etc.). This change is irreversible - you can't simply "unbake" a cake.

In contrast, a physical change alters the appearance or form of a substance but doesn't change its chemical composition. For example, cutting a cake into slices is a physical change.