The Law of Conservation of Mass states that in a chemical reaction, matter is

not created or destroyed.

O

O

A. True

B. False

A. True

A. True

Explanation:

Matter can neither be created nor destroyed during a chemical reaction but it can be changed into other forms of energy.

For example, biofuels such as petrol, diesel and coal etc are the forms of matter. When these substances are used, they are converted into other forms of energy such as heat energy, mechanical energy and sound energy etc.