Kerala Board Solutions for Chapter: The Essence of Change, Exercise 5: Exercise 5

Try doing the experiment given below and write your observations:

Can the steam be converted back into water. What changes should be brought about in the experiment to make this possible?

Examine the figure and discuss the materials to be used to conduct this experiment.

Can the experiment be carried out more effectively by placing an ice cube on the watch glass?

The steam is again converted to water through this experiment. Now can the water be converted into ice again? What method can be adopted for this?

Note down in the flow chart given below how heat affects the change of state of water.

Is energy absorbed or released when steam is changed into water and then into ice?

Which among the three states of matter has the maximum amount of energy?

Which state has the minimum energy?