Question

3. The boiling of water is a chemical change.

• A. True
• B. False

Answer 1

The correct option is B False

Chemical change:

• In a chemical change, new substances are formed, and these new substances have entirely new properties.
• A chemical change cannot be easily reversed.
• There is usually a change in weight during a chemical reaction.
• Lots of heat is usually given off or absorbed during a chemical reaction.
• For example- Magnesium in burning forms an entirely new substance i.e. magnesium oxide.

Physical change:

Boiling of water is a physical change because

• In a physical change, no new substances are formed like as in the boiling of water no new substances are formed, water changes liquid state to a vapour state.
• Physical changes can be generally reversed, here boiling of water after cooling easily comes back in its liquid state from the vapour state

Therefore, the given statement is FALSE.