An explosion is a rapid chemical reaction that results in a considerable increase in volume of gases.

a. True

b. False

The statement is true. An explosion is a rapid chemical reaction that results in a considerable increase in volume of gases.

Explanation:

Explosion can be defined as high pressure opening of a matter with release in many gases which is increase in the volume of gas.

With explosion there is release of huge amount of energy.

This energy can be in the form of heat energy or sound energy.

Hence the statement that explosion is a chemical change which results in the increase in volume is correct.