Question

Classify the following as physical or chemical change.

Chopping up wood

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. It can be reversed

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. It cannot be reversed

Part II - Classification

Chopping of woods is a physical change because whatever new substance is formed by chopping is a result of alteration of shape and size but no any chemical reactions takes place and no new product is formed.

Final answer -

Chopping of woods is a physical change