Which of the following changes are chemical changes?

a. Water is frozen.

b. Water is heated up.

c. Gasoline is burned.

d. Gasoline is evaporated.

e. Water is boiled.

Answer: Option (c) is the correct answer.

Explanation:

A change that does not bring any difference in chemical composition of a substance are known as physical properties.

For example, shape, size, mass, volume, density, etc of a substance are all physical change.

And, a change in which there occurs a difference in chemical composition of a substance then it is known as chemical change.

For example, precipitation, reactivity, toxicity etc are chemical change.

When gasoline is burned then it is a chemical change.

Thus, we can conclude that out of the given options gasoline is burned change is a chemical change.

Gasoline is burning

Explanation:

examples of chemical changes are burning, cooking, rusting and rotting