What is the name of the variable that tells you how much heat energy is required to change the temperature of \(1 kg\) of substance by \(1^{\circ}C\)?
Specific latent heat capacity
Specific heat capacity
Capacity of materials to withstand heat
What are the units of specific heat capacity?
\[J kg^{-1^{\circ}}C^{-1}\]
\[J kg^{-1}\]
\[kg J^{-1}\]
The specific heat capacity of water is \(4180 J kg^{-1^{\circ}}C^{-1}\).
How much heat energy is required to raise the temperature of \(5 kg\) of water by \(1^{\circ}C\)?
\[5165 J\]
\[20900 J\]
\[10500 J\]
The specific heat capacity of lead is \(128 J kg^{-1^{\circ}}C^{-1}\)
How much heat energy is required to raise the temperature of \(10 kg\) of lead by \(15^{\circ}C\)?
\[19200 J\]
\[135300 J\]
\[154950 J\]
If \(877.8 kJ\)of energy are added to a volume of water to raise its temperature from \(20^{\circ}C\) to \(50^{\circ}C\), what mass of water has been heated?
\[7 kg\]
\[0.007 kg\]
\[70 kg\]
What \(2 kg\) material has its temperature raised by \(20^{\circ}C\) if it is given \(41,320 J\) of energy?
Aluminium
Glycerol
Silica
The specific heat capacity of water is \(4180 J kg ^{-1^{\circ}}C^{-1}\).
What is the final temperature of water if \(10 kg\) starts at \(20^{\circ}C\) and is given \(1.672 \times 10^{6}J \) of energy?
\[40^{\circ}C\]
\[50^{\circ}C\]
\[60^{\circ}C\]
Storage heaters are devices which store heat and release it when required. What should the storage material be made of?
Material with a low specific heat capacity as it will heat up quickly
Material with a high specific heat capacity as it will heat up slowly
Material with a high specific heat capacity as it will store a lot of energy
A block of aluminium increases its temperature by 95 degrees when it is supplied with \(7200 J\). How much energy would it have to emit in order for its temperature to fall by 75 degrees?
\[5700 J\]
\[6300 J\]
\[6400 J\]
Some portable radiators use oil (\(c = 2000 J / kg / c\)) instead of water as their heat store. The heater raises the temp to \(80°C\) then cuts off. Which of these following statements is a benefit of using oil rather than water in the radiator?
It will heat up more slowly
It will use more energy to heat up
It will cool down more quickly