2:30 - Magnetism and Electromagnetism (Physics topic 7)
3:00 - Ecology (Biology topic 7)
3:30 - Rate and Extent of Chemical Change (Chemistry topic 6)

2:30 - Waves (Physics topic 6)
3:00 - Inheritance (Biology topic 6)
3:30 - Chemistry of the Atmosphere and Using Resources (Chemistry topic 9 & 10)

2:30 - Forces (Physics topic 5)
3:00 - Homeostasis (Biology topic 5)
3:30 - Organic Chemistry and Chemical Analysis (Chemistry topic 7 & 8)

Key topics:

2:30 - Energy, Particle Model and Atomic Structure (Physics topic 1, 3 & 4)
3:30 - Electricity (Physics topic 2)

Key topics:
2:30pm - Infection and Bioenergetics (Biology topic 3 & 4)
3:30pm - Chemical and Energy Changes (Chemistry topic 4 & 5)