Question

Tearing of a paper is a ______ change but burning of a paper is _________ change.

• A. physical
• B. chemical

Answer 1

Physical changes:

• No new products are formed. Reversible and temporary change.
• Example: Tearing a paper is a physical change because it remains the same as no new product is formed.
• Reason: No new products formed. No changes in its chemical properties.

Chemical changes:

• Some new products are formed. Irreversible and permanent change.
• The burning of paper is a chemical change because it converts into ash, and a new product is formed which cannot be brought back into its original state.

Therefore Tearing of a paper is a physical change but the burning of a paper is a chemical change.