What you'll learn
Reactions, their rates and energy.
Key ideas
- Acids and bases, neutralisation, electrolysis.
- Rates (collision theory); exothermic and endothermic reactions.
Exam tips
- Explain rate using collision frequency and energy.
- A catalyst lowers activation energy and isn't used up.
Common mistakes
- Confusing exothermic and endothermic.
- Not balancing equations.