Question

Why do substances produce flames of different colours?

Answer 1

When you heat an atom, some of its electrons are "excited* to higher energy levels and some lower level energy . When an electron drops from one level to a lower energy level, it emits a quantum of energy. ... Thedifferent mix of energy differences for each atom produces different colours. Each metal gives a characteristic flame
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Answer 2

Explanation:

depending on the ignition temperature nature of material a substance produce flame of different colours