Physics Booklet 2 : Electrical power and heating

solid

definite shape and volume, vibrates very little

liquid

no definite shape, but definite volume, vibrates

gas

no definite shape or volume, vibrates a lot

sublimation

solid to gas / gas to solid

melting

solid to liquid

evaporation

liquid to gas

condensation

gas to liquid

freezing

liquid to solid

kinetic theory

all matter consists of tiny particles that are in constant motion

heat energy (J) (shc)

mass (kg) x specific heat capacity (J/kg°c) x temperature change (°c)

heat energy (J) (slh)

mass (kg) x specific latent heat (J/kg)

pressure

force per unit area.

absolute zero

-273°c / 0 kelvin

efficiency

useful energy transferred/total energy supplied

power (w)

work done (J) / time (s)

electrical power (w)

current2 (A) x resistance (O)

resistance in electrical circuits

higher heat, higher resistance, loss of energy, delocalised electrons move freely

energy lost (J)

current2 (A) x resistance (O) x time (s)

power lost (w)

current2 (A) x resistance (O)

radiation

waves of energy that can even go through vacuum