Energy changes
Explain exothermic and endothermic reactions, reaction profiles, bond energy calculations
What you'll learn
- 1
Imagine you're holding a heavy 🏀 basketball at shoulder height. It has stored energy — like a coiled spring waiting to go!
- 2
What type of energy does the basketball have when you're holding it still above the ground?
- 3
Drag the basketball up and down on the height scale. Watch the energy bars change!
- 4
A 2 kg book is on a shelf 3 m high. How much gravitational potential energy does it have? (Use g = 10 N/kg)
- 5
If you drop the book from 3 m, what happens to the gravitational potential energy?
- 6
A 0.5 kg ball is dropped from 4 m. Calculate its GPE. Use g = 10 N/kg.
- 7
What is the GPE of a 0.5 kg ball at 4 m height? (g = 10 N/kg)
Practise Energy changes with Whizlo
Free AI-tutored lessons, unlimited practice questions, and progress tracking for ages 14–16. Aligned to the UK National Curriculum.