Heat

Gap-fill exercise

  
Fill in all the gaps, then press "Check" to check your answers. Use the "Hint" button to get a free letter if an answer is giving you trouble. You can also click on the "[?]" button to get a clue. Note that you will lose points if you ask for hints or clues!
All the substances in our surrounding are made up of and molecules.

When heat energy is supplied to any substance it the energy of the atoms.

Change in state is due to supply of energy.

When the water is heated, water molecules receive heat energy which increases energy of the molecules.

When we heat them the force of attraction between the molecules .

If heat energy is supplied to or taken out from a substance, it will undergo a from one state of matter to another.

The process of converting solid to liquid is called .

The process of converting liquid to gas is called .

The process of converting solid to vapors is called .

The process of converting gas to liquid is called .