Subject: General Science
Book: NCERT Science Class 8
Materials are classified into metals and non-metals based on their properties.
- **Metals**:
- Good conductors of heat and electricity.
- Malleable (can be beaten into sheets) and ductile (can be drawn into wires).
- Example: Iron, Copper, Aluminium.
- **Non-Metals**:
- Brittle, poor conductors.
- Example: Sulfur, Carbon.
- **Uses**:
- Metals are used in making vehicles, bridges.
- Non-metals like oxygen are used in respiration.
**Possible Exam Questions:**
1. Compare the properties of metals and non-metals.
2. Why is copper used in electrical wiring?
3. How do metals react with water, acids, and oxygen?
4. What are the industrial uses of non-metals?
5. Discuss the role of metals in human health.
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