Question

I) Name them :
1. A chemical reaction which proceeds with the realease of heat energy.
2. The intermolecular force acting between same kind of molecules.
3. The initial energy used in heating of a substance.
4. A change that is irreversible.
5. The constant temperature at which a gas changes into liquid state by giving out heat energy.
6. The solid state formed from the gaseous state on cooling.
7. The compound formed when quicklime reacts with water.
8. The state of matter where the density is highest.​

Answer 1

1. Exothermic reactions

2. Intermolecular forces of attraction.

3. Flame or heat energy

4. Burning of paper into ashes

5. Evaporation

6. Dry Ice ( solid carbon dioxide )

7. CaCo2 (Calcium carbonate)

8. Solid state

Hope it helps you ;)