Why Flame Imparts Colour?

When the atoms of a gas or vapor are excited, for instance by heating or by applying an electrical field, their electrons are able to move from their ground state to higher energy levels. ... This energy corresponds to particular wavelengths of light, and so produces particular colors of light.

Why do flame tests change colour?

Any element placed in a flame will change its color. ... The color of the light emitted depends on the energies of the photons emitted, which are in turn are determined by the energies required to move electrons from one orbital to another.

How does flame produce color?

The colors observed during the flame test result from the excitement of the electrons caused by the increased temperature. The electrons "jump" from their ground state to a higher energy level. ... The color emitted by larger atoms is lower in energy than the light emitted by smaller atoms.