Question

A ______ is a process in which the physical and chemical properties of the original substances change as new substances are formed.

fill in the blank with the answer.

Answer 1

Answer:

chemical change

Explanation:

In chemical change , considerable amount of heat is used , hence a change in substance formed

Answer 2

chemical change - Chemical changes occur when a substance combines with another to form a new substance, called chemical synthesis or, alternatively, chemical decomposition into two or more different substances.