Physical and Chemical Changes

Question 1

What is a physical change?

Answer 1

A physical change is where no new substances are formed which means the change the state of matter.

Question 2

What is a chemical change?

Answer 2

A chemical change occurs when new substances are formed which has different properties from the original state/substances. This means the changes are irreversible.

Question 3

State 3 differences between a physical and chemical change.

Answer 3

1. Chemical change is irreversible while a physical change is reversible.
2. In a physical change, no new substances are formed while in a chemical change , new substances are formed.
3. In a physical change, the mass of the substance does not change while in a chemical change, the mass of the substance changes.