Respuesta :

rachelblaiir

Answer:

Chemical. Things within the bread are having chemical reactions, such as the yeast reacting to the heat and baking.

vickygirl349

Answer:

There is definitely a chemical change taking place during baking, and that is the conversion of baking soda (sodium bicarbonate, NaHCO3) to carbon dioxide (CO2).

Explanation:

Hope this helps :)