Class 7 · Science · Curiosity

5. Changes Around Us: Physical and Chemical

Try question 1

Melting of ice is a

Tap an answer to check.

Answer and explanation

Answer: B. physical change

Only the state changes; it is still water.

Open this question →

Try question 2

Burning of paper is a

Tap an answer to check.

Answer and explanation

Answer: B. chemical change

New substances such as ash, smoke and gases form.

Open this question →

Try question 3

Getting large, pure crystals of salt from its solution is called

Tap an answer to check.

Answer and explanation

Answer: A. crystallisation

It is a physical change used to purify substances.

Open this question →