Take few ice cubes in a container and heat them for some time. What ha

1.	Take few ice cubes in a container and heat them for some time. What happens? The ice cubes melt and become water. Now heat the water for some time. What do you observe? The volume of water in the vessel decreases. What do you understand from this Activity?
Answer» 1. In ice cubes, the force of attraction between the water molecules is more. So they are close together. 2. When we heat them the force of attraction decreases and the ice cubes become water. 3. when we heat the water, the force of attraction between the molecules decreases further. 4. Hence they move away from one another and become vapor. 5. Since water vapor escape to the surrounding,water level decreases. 6. From this Activity we understand that heat energy causes change in the state of the substances.

Take few ice cubes in a container and heat them for some time. What happens? The ice cubes melt and become water. Now heat the water for some time. What do you observe? The volume of water in the vessel decreases. What do you understand from this Activity?

Answer»

1. In ice cubes, the force of attraction between the water molecules is more. So they are close together.

2. When we heat them the force of attraction decreases and the ice cubes become water.

3. when we heat the water, the force of attraction between the molecules decreases further.

4. Hence they move away from one another and become vapor.

5. Since water vapor escape to the surrounding,water level decreases.

6. From this Activity we understand that heat energy causes change in the state of the substances.

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