The average kinetic energy of the particles is directly proportional to the temperature of the gas.

The density of matter and the volume occupied by the matter does not vary within a system.

The law of conservation of mass holds because the naturally occurring elements are unstable.

Liquids tend to evaporate when left exposed to vacuum.

The particles in gases are not arranged in a fixed order and keep moving randomly in the available space.

Kinetic energy is sufficient to break the intermolecular forces of molecules of solids.

Molecules of different type exert the force of cohesion.

Which state of matter consists of a large number of molecules moving in random directions?

On heating the substance, the molecules gain which kind of energy?

When wood is burnt in air, which substance is formed?

When reactants are mixed together to form products, what kind of change is not involved?