Question

Which energy transformations occur when a candle burns?

Thermal energy transforms into mechanical energy and radiant energy.
Chemical energy transforms into thermal energy and electrical energy.
Thermal energy transforms into radiant energy and chemical energy.
Chemical energy transforms into thermal energy and radiant energy.

Answer 1

Chemical energy transforms into thermal energy and radiant energy.

Explanation: burning is combustion of the candle’s wax (chemical energy) into CO2 and H2O; the reaction is exothermic, producing heat (thermal energy) and light (radiant energy). The other options (mechanical or electrical energy) do not apply.