Question

When you use air freshener, you spray it in one corner of the room and it spreads in the whole room very fast. This is because

• A. Particles of air have space between them.
• B. Particles of air attract each other.
• C. Particles of matter are continuously moving.
• D. Particles of air attract each other and have space between them.

Answer 1

The correct option is C

Particles of matter are continuously moving.

Particles of matter are continuously moving between solids, liquids and gases, that is these particles are in a state of perpetual motion. Among all these three states of matter , the gaseous particles have least intermolecular forces of attraction. So the particles in gas move faster as compared to solids and liquids. This is the reason why diffusion takes place very easily in gases.