Autumn First Half

Unit B4 · 4 lessons

Breathing and gas exchange

1. 01The gas exchange system
2. 02How breathing works
3. 03Alveoli: built for exchange
4. 04Exercise, asthma and smoking

Unit C4 · 4 lessons

Chemical reactions

1. 01Chemical change vs physical change
2. 02Reactions rearrange atoms
3. 03Word equations
4. 04Mass in a reaction

Unit P5 · 4 lessons

Pressure

1. 01Pressure = force ÷ area
2. 02Pressure in liquids
3. 03Upthrust, floating and sinking
4. 04Atmospheric pressure

Unit P1 · 2 lessons

Energy transfers

1. 01Energy stores
2. 02Energy transfers: before and after