Matter — Chapter Summary

Matter is anything which has mass

Matter is anything which has mass, occupies space and can be perceived by our senses. Air is also matter because it occupies space and can be felt whe

Matter is made of very tiny

Matter is made of very tiny particles called atoms and molecules. Atoms usually do not have independent existence and combine to form molecules, which

Greek philosophers believed matter was made

Greek philosophers believed matter was made of fire, water, air, and earth. Indian philosophers believed in five elements. Maharshi Kannada suggested

Particles of matter are always

Particles of matter are always in random motion. Their kinetic energy increases with increase in temperature and decreases on cooling. Robert Brown sh

Diffusion is the intermixing of two

Diffusion is the intermixing of two or more substances due to the motion of their particles to form a uniform mixture. It is fastest in gases, slower