Question

4) Choose the correct option:
A) When does an object expand?
1) On cooling.
3) On heatin
2) On applying pressure. 4) All of thes
B) If a food material turns blue blackon ad​

Answer 1

Answer:

3) On heating

Example, metals .

Answer 2

Answer:

On heating

Explanation:

when heat is added to a substance the molecule and atoms vibrate faster and expand

really hope that this helps you