A majority of the world’s total energy comes from the burning of fossil fuels. Coal, natural gas, and petroleum (which includes oil and gasoline) are all used extensively throughout the world. The energy content of a fossil fuel is an important property. This property helps scientists and engineers determine the usefulness of a fuel. Energy content is the amount of heat produced by the burning of 1 gram of a substance, and is measured in units of joules per gram (J/g).

In this experiment, you will determine the energy content of a fuel by burning an amount of the fuel and capturing the heat released in a known mass of water. You will use a temperature probe to measure the initial and final temperatures of the water, and then calculate the energy released.


  • Use a temperature probe to measure the temperature of water.
  • Use a balance.
  • Determine the energy content of fuels.