Question

Just by observation, how can you differentiate between incomplete and complete
combustion?​

Answer 1

Answer:

Complete combustion occurs when there is enough oxygen to completely use up all the reactants. Incomplete combustionoccurs when there is not enough oxygen resulting in the production of smoke, and less energy is produced when compared with complete combustion.

Explanation:

HOPE THIS HELPS YOU

PLEASE MARK AS BRAINLIEST AND FOLLOW ME

Answer 2

When the regulator collar of a bunsen burner is closed there is the insufficient amount of oxygen available, resulting in incomplete combustion and formation of soot. On the other hand when the regulator collar of a bunsen burner is open there is sufficient amount of oxygen available, resulting in complete combustion and no soot.