Everything in the universe that occupies space and has mass is called matter.

Air is not considered matter because it is invisible.

Particles of matter are stationary and do not move.

The smell of hot food can reach us from a distance due to the diffusion of its particles.

Solids have a definite shape and definite volume.

Gases can be compressed more easily than solids or liquids.

Liquids have fixed volume but not fixed shape.

A wooden table is not classified as matter.

The particles in a liquid are tightly packed with no movement.

Diffusion occurs faster in solids compared to gases.

Melting is the change of solid to liquid at a fixed temperature.

Evaporation is a surface phenomenon.

When a liquid changes to gas, it absorbs heat from the surroundings.

Intermolecular forces are strongest in gases.

Increasing the temperature increases the rate of diffusion.

Plasma is one of the states of matter commonly found at room temperature.

Sublimation is the conversion of a liquid directly into solid.

Water vapor present in air is matter.

Boiling and evaporation are exactly the same process.

Particles of all states of matter have spaces between them.

Liquids can be compressed easily.

Solids diffuse very slowly when compared to liquids and gases.

A change of state from solid to gas directly is called fusion.

Cooling a gas can condense it into a liquid.

Solids, liquids, and gases can all undergo diffusion.