Question

when sugar molecules break down under high heat, what happens? (check all that apply)
caramelization
sweet, nutty and slightly bitter flavor compounds form
the cookies burn

Explanation:

When sugar molecules break down under high - heat, caramelization occurs. During caramelization, sweet, nutty and slightly bitter flavor compounds are formed. Burning of cookies is not a direct result of sugar - molecule breakdown but rather over - baking of the entire cookie mixture.

Answer:

caramelization, sweet, nutty and slightly bitter flavor compounds form