Question

At room temperature, the forces of attraction between the particles of solid substances are__________than those which exist in the gaseous state.

Answer 1

1. At room temperature, the forces of attraction between the particles of solid substances are stronger than those which exist in the gaseous state.
2. Therefore the correct answer to be filled in the blank will be stronger.
3. The forces of attraction between the particles of a gas are minimum, intermediate in the case of a liquid and maximum in a solid.
4. Hence, in the case of oxygen ‘forces of attraction’ are minimum since it is a gas.
5. On increasing the temperature of solids, the kinetic energy of the particles increases.
6. Due to the increase in kinetic energy, the particles start vibrating with greater speed.
7. The energy supplied by heat overcomes the forces of attraction between the particles.
8. The particles leave their fixed positions and start moving more freely.