Question

Why do different elements produce different colors when heated?

Answer 1

Heating an atom excites its electrons and they jump to higher energy levels. When the electrons return to lower energy levels, they emit energy in the form of light. ... Every element has adifferent number of electrons and adifferent set of energy levels. Thus, each element emits its own set ofcolours.

Answer 2

It is because when different elements are heated different levels of light is produced and the colour of the flame depends on the level of heat energy.