Question

Changes which only affect the physical form of a substance are known as:

• A. physical changes
• B. chemical changes
• C. slow changes
• D. periodic changes

Answer 1

The correct option is A physical changes

Physical changes are those changes in which no new substance is formed, the composition of the substance remains the same, though its state, shape or size (physical forms) may change. For example, cutting of wood into small pieces. The chemical composition of the wood is still the same but only its size has changed. Hence this is a physical change.