Question

Why change of state take place?​

Answer 1

The change of state takes place when matter absorbs or loses energy

Answer 2

We already learnt about the three general states of matter (solids, liquids amd gases). Now, we have to know that all those states can get inter-converted to each other. This process is termed as CHANGE OF STATE. For example, if we heat a ice (SOLID) it will melt to form water (LIQUID).

Now, this change of state takes place when there is either absorption or rejection of heat. Surrounding temperature and pressure also affects the rate of change of state of matter. When heat is absorbed, ice will be converted to water. Conversely, when heat is rejected, water will be converted to ice.