Question

one example of Change of state from liquid to gas class 7​

Answer 1

If the water is hot enough, it starts to boil. Bubbles of water vapour are formed in the boiling water. This happens as particles of liquid water gain enough energy to completely overcome the force of attraction between them and change to the gaseous state.

Answer 2

1. Wet clothes left in direct sunlight dry up, because the water inside it gets evaporated.

2. Common salt is extracted from seawater using the help of evaporation of water. When the seawater is kept under sunlight, the water evaporates, leaving behind common salt.

3. Washed hair gets dried under the hair drier because the water evaporates.