Question

Based on the results of this lab, write a short paragraph that summarizes how to distinguish physical changes from chemical changes.

Answer 1

A physical change is reversible, a chemical change is not. A physical change is a change in which no new substance is formed; a chemical change results in the formation of one or more new substances

Answer 2

Physical changes occur when the properties of a substance are retained and/or the materials can be recovered after the change. Chemical changes involve the formation of a new substance. Formation of a gas, solid, light, or heat are possible evidence of chemical change.