Question

Do all combustible substance produce flame?why?

Answer 1

Answer:

The chemical process in which a substance reacts with oxygen to give off heat is called combustion. Substances that undergo combustion are called combustible substances. It may be a solid, liquid or gas. ... On the other hand certain substances like coal do not vaporize and hence doesn't produce a flame.

Answer 2

Explanation:

The chemical process in which a substance reacts with oxygen to give off heat is called combustion. Substances that undergo combustion are called combustible substances. It may be a solid, liquid or gas. ... On the other hand certain substances like coal do not vaporize and hence doesn't produce a flame