The specific heat capacity of a
substance is a measure of how much
heat energy it can hold. It is the energy
needed to increase the temperature of
1kg of the substance by 1 degree celsius.
Water: 4181
Lead: 128
Oyxgen = 918
Water has a
particularly
high specific
heat capacity.
This makes
water useful
for storing
heat energy,
and
transporting it
around the
home using
central
heating pipes.
A substance must absorb heat energy so that
it can melt or boil. The temperature of the
substance does not change during melting,
boiling or freezing, even though energy is still
being transferred.
The specific latent heat of a substance
is the measure of how much heat
energy is needed to melt or boil it.
Water: SLH melting - 334. SLH boiling
- 2260
Lead: SLH melting - 22.4. SLH boiling - 855
Oxygen: SLH melting - 13.9. SLH boiling - 213
Specific Latent Cpacity Equation: energy (j) =
mass (kg) x specific heat capacity (J/kg/.c) x
temperature change (.c)
Specific Latent Heat Equation: energy
(j) = mass (kg) x specific latent heat
(J/kg)