Question

Differentiate between rusting and burning.

Answer 1

RUSTING	BURNING
1. The reaction of iron with oxygen and moisture in air resulting in the formation of reddish-brown coloured hydrated iron oxide(rust) is called rusting.	1. The reaction of oxygen with a substance(fuel) that results in the release of heat and light is called burning.
2. The presence of moisture and oxygen is necessary for rusting.	2. The presence of fuel and oxygen is necessary for burning.
3. It is a slow process.	3. It is a fast process.
4. Energy is not released during the reaction.	4. Energy in the form of heat and light is released during the reaction.
5. Reaction - Iron(s) + Oxygen(g) + Water vapour(g) → Hydrated iron oxide(s).	5. Reaction - Fuel(s)/(l)/(g) + Oxygen(g) → Carbon dioxide(g) + Heat + Light.