Question

Classify the following as physical or chemical change.

Painting a wall

Answer 1

Part I - Definition

Physical change - A change in which no new substance is formed and only there is change in shape , size and state and color are termed as physical change.

Chemical change - A change in which new substances in form of products are formed due to occurrence of a chemical reaction is termed as chemical change.

Part II - Classification

Painting a wall is a physical change as there is change in the color of the wall and its appearance , but no change into chemical composition takes place.

Final answer -

Painting a wall is a physical change