Question

In a gas boiler, fuel is burnt in order to heat a home. The burnt fuel is used to heat cold water pipes which then release hot exhaust gas. How are different energy stores changed by the boiler?

1) Chemical energy is converted to thermal energy
2) Thermal energy is converted to chemical energy
3) Thermal energy is converted to electrical energy
4) Electrical energy is converted to thermal energy

Answer 1

In a gas boiler, chemical energy from the fuel is converted into thermal energy, which is used to heat water and subsequently a home.

Step-by-step explanation:

When considering a gas boiler, the energy transformations involve the conversion of chemical energy to thermal energy. The fuel's chemical energy is released when it burns. This energy then heats water in the boiler's pipes, and the heated water can be used to warm a home. The byproduct of combustion, which includes hot exhaust gas, represents a loss of energy to the surroundings. Therefore, among the options provided, the correct one is that chemical energy is converted to thermal energy.