Question

Chalk, iron nail, wood, aluminium, candle, cotton usually look different from each other. Give some properties by which we can prove that these materials are different.

Answer 1

1. Chalk – Hard, rough, non-lustrous
2. Wood – Hard, rough, non-lustrous
3. Aluminium – Hard, smooth, lustrous
4. Candle – Hard, smooth, non-lustrous
5. Cotton – Soft, smooth, non-lustrous
6. Iron nail – Hard, smooth, lustrous