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UNIT OVERVIEW
This revision unit covers all the Physical Sciences topics from Term 2. You will consolidate your understanding of:
- Covalent molecular and covalent network structures
- Physical and chemical changes, including balanced equations
- Ions in solution, conductivity, and aqueous reactions
- Magnetic fields, poles, and compasses
- Electric charges, polarisation, and charge conservation
- Electric circuits, Ohm's Law, and resistor combinations
Why these topics matter:
| Topic | Real-life connection |
|---|---|
| Chemical bonding | Diamond is hard because of its network structure; ice melts easily because water has a molecular structure |
| Aqueous reactions | Water treatment plants use precipitation reactions to remove harmful ions |
| Magnetism | Compasses use Earth's magnetic field for navigation |
| Electrostatics | Static shocks happen because charge transfers when you walk on carpet |
| Electric circuits | Understanding series and parallel circuits helps you know why some appliances trip the breaker |