Page 19 - FINAL DBS10012_HEAT TEMPERATURE 20102022 (2) (1)
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Where the increase or decrease in the temperature and m is the mass of the substance, in
kilogram. Therefore, the quantity of heat absorbed or lost by a body is given by:
Q =mc
Q =mc T
Q =mc(Tfinal – T initial)
Q = heat energy (J)
M = mass (kg)
o
c = specific heat capacity (J/kg C)
o
T = temperature change ( C); Tfinal – T initial
When a glass block of mass 1 kg and a copper block of mass 1 kg are heated under the same
conditions, the increase in the temperature of the copper block is higher than that of the glass
block. This is because copper has a lower specific heat capacity than glass. A material which has a
high specific heat capacity has the following properties:
a. It takes a longer time to be heated.
b. It does not lose heat easily
c. It is usually used as a heat insulator
d. It is a poor heat conductor
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