Boojho wants to separate the following materials as combustible and non-combustible. Can you help him?

Charcoal, chalk, stone, iron rod, copper coin, straw, cardboard, glass, paper, candle, wood.

(a) Combustible substances — charcoal, straw, card board, paper, candle wood,

(b) Non-combustible substances — chalk, stone, iron rod, copper coin, glass.

Substances that catch fire easily are known as combustible substances.

Substances that do not catch fire easily are known as non-combustible substances.