Heat Transfer

There are 3 states of matter.

These are

(Choose more than one answer)

• solid

• liquid

• gas

• water

A solid changes to a liquid by

• melting

• sublimation

• condensation

A liquid changes to gas by boiling or by

• evaporation

• melting

• sublimation

• condensation

Change of states, between solid, liquid and gas, are physical changes because they are

• reversible

• irreversible

Substances that change from solid to gas (e.g. dry ice, moth balls) without changing to liquid is called

• sublimation

• condensation

• evaporation

When a gas changes to liquid it is called

e.g. water vapour; water droplets on the glass of a cold drink

• condensation

• sublimation

• evaporation

A liquid changing to a solid is called

e.g. water changing to ice

• freezing

• condensation

• evaporation

Heat is transferred through different substances in 3 different ways

(Choose more than one answer)

• conduction

• convection

• radiation

• evaporation

Conduction takes place mainly in

• solids

• liquids

• gases

All metals are good __________ of heat. This means they transfer heat

quickly.

• conductors

• insulators

• radiators