Question

how can we change the state of a given substance? explain with three examples​

Answer 1

Answer:

1. state of substance can be changed by heating

2. by freezing

3.condensation

Explanation:

1.when we heat water it starts changing into water vapour or gaseous state

2.when we pour water and keep them inside the freezer it starts changing into solid state or ice cubs

3.when we drink a cold soda on a hot day we can see water on the side if the can looking like sweats this is because the water vapour ( gaseous state)

hits the cold surface of the can and changes into water

Answer 2

Answer:

1. WE CAN CHANGE THE STATE OF A SUBSTANCE BY PHYSICAL MEANS LIKE COOLING HEATING etc
2. example ;-1) ice on heating changes its state from solid to liquid to form water
3. example :- 2) water on freezing forms ice
4. example :- 3) camphor on heating sublimes to form vapours

Explanation: