Y7 - Science - Chemistry

NOT FINISHED

Matter

The material from which things are made up from. Takes up space. Can exist as a solid, liquid, or gas

Solid

Have a fixed volume and cannot be compressed.

Liquid

Has a fixed volume, but doesn’t have a fixed shape

Gas

No fixed volume or shape.

Particle Model

A scientific theory that explains the properties of solids, liquids and gases by suggesting that all matter is made of particles, and that those particles behave differently in solids, liquids, and gases.  

Evaporation

Liquid turns into a gas. Increase in temperature.

Condensation

Gas turns into liquid. Decrease in temperature.

Melting

Solid turns into liquid. Increase in temperature.

Freezing

Liquid turns into solid. Decrease in temperature.

Density

The measurement of quantity or mass per unit of volume in a particular substance.

Mass ➗ Volume

Melting Point

The temperature at which a given solid will melt

Compressibility

The capacity of something to be flattened or reduced in size by pressure.

Boiling point

The temperature at which a liquid changes into a gas

Pure substance

Made from only one chemical element or one compound.