Question

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.

Answer 1

Kindly check the explanation section.

Step-by-step explanation:

What we have up there as the problem/ Question is not a question at all but the differences between chemical changes and physical changes.

The two changes that may occur to a chemical substance or matter are either physical change or chemical changes.

A perfect example of physical change is the change of States of matter. In chemical changes that chemical characteristics of the compound /substance changes while in physical changes, the chemical composition of the substance will not change(only the appearance).

All the properties given for the physical ans chemical changes in the Question are correct.