Matter in Our Surroundings

Flashcards covering key vocabulary from the chapter on matter and its properties.

Matter

Anything in the universe that occupies space and has mass.

Panch Tatva

The five basic elements that early Indian philosophers classified matter into: air, earth, fire, sky, and water.

Diffusion

The intermixing of particles of two different types of matter on their own.

Kinetic Energy

Energy that particles of matter possess due to continuous movement; it increases with temperature.

Melting Point

The minimum temperature at which a solid melts to become a liquid at atmospheric pressure.

Latent Heat of Fusion

The heat energy required to change 1 kg of a solid into liquid at atmospheric pressure at its melting point.

Boiling Point

The temperature at which a liquid starts boiling at atmospheric pressure.

Latent Heat of Vaporisation

The heat energy required to change 1 kg of a liquid to gas at atmospheric pressure at its boiling point.

Sublimation

The change of state directly from solid to gas without changing into liquid state.

Evaporation

The phenomenon of change of a liquid into vapours at any temperature below its boiling point.