When baking brownies, lot of heat is used to convert the raw ingredients into the delicious treats. what branch of chemistry that explains the mechanism, rate, and energy transfer that occurs when matter undergoes a change?

Physical Chemistry

Explanation:

Physical Chemistry is the branch of science which is concerned with the mechanism, the rate, and the energy transfer which occurs when the matter undergoes a particular change.

When the brownies are baked, the raw material like flour, egg, additives and other food agents absorb head and undergoes changes by various mechanisms and various rate to convert into delicious treats.

chemical digestion occurs in the stomach were hcl and pepsin forms chyme, the mouth in which salivary amylase breaks down starch to form bolus, and the small intestine specifically the duodenum.