Question

what occurs during a chemical change?
a) electricity passes through a substance.
b) a substance is heated.
c) chemicals are combined.
d) a new substance with different physical properties is produced

Explanation:

A chemical change involves a reaction where the chemical composition of substances is altered, resulting in the formation of a new substance with different physical and chemical properties. Options A and B can be physical changes or just external influences. Option C - combining chemicals may not always result in a chemical change if no new substance is formed. Option D correctly describes the outcome of a chemical change.

Answer:

D. A new substance with different physical properties is produced