Topic Details (Notes format)

Metals and Non-Metals

Subject: General Science

Book: NCERT Science Class 8

Metals and non-metals are classified based on their physical and chemical properties.
- **Properties of Metals**:
- Malleable (can be beaten into sheets) – Example: Aluminium foil.
- Ductile (can be drawn into wires) – Example: Copper wires.
- Good conductors of heat and electricity – Example: Silver, Copper.
- **Properties of Non-Metals**:
- Brittle (cannot be beaten into sheets) – Example: Sulphur.
- Poor conductors of electricity – Example: Carbon (except graphite).
- **Uses**:
- Iron is used in construction.
- Gold is used in jewellery.
- Oxygen (a non-metal) is essential for respiration.

**Possible Exam Questions:**
1. Differentiate between metals and non-metals with examples.
2. Why are metals good conductors of electricity?
3. Explain the importance of non-metals in daily life.
4. What are the industrial uses of metals like iron and aluminium?
5. Why is gold preferred for making jewellery?