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Changing reaction rates
Predict and explain how temperature, concentration, surface area and catalysts change reaction rates, using rate graphs.
⏱ 20 min❓ 8 questions
What you'll be able to do
- ✔I can explain how temperature, concentration, surface area and catalysts affect reaction rate using collision theory
- ✔I can interpret and compare rate graphs, distinguishing rate from total amount of product
- ✔I can calculate how cutting up a solid changes its surface area
How this works
- 1Read the short explanations first — they teach you what you need before each question.
- 2Answer each question, then tap Check. A right answer moves you on automatically; if it's wrong, you'll see a friendly explanation of why.
- 3Finish all 3 steps to see your score — sign in and subscribe to unlock the full lesson and save it.
What's inside
8 questions and 1 quick teaching card, including:
- 🔢Number answer — Work out the answer and type the number.
- 🔘Multiple choice — Tap the answer you think is best, then check it.
👪Grown-up tip: sit alongside younger learners for the first few lessons. Read the questions together and chat about the explanations — that's where the real learning sticks.
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Curriculum: AC9S10U07, AC9S10I04