All experiments › Reaction rates
The iodine clock
A colourless mixture that turns blue-black at a moment you can predict.
Topic: Reaction ratesGrade: 10Free
🧪 Start the experiment — free
Runs in the browser on phones, tablets and computers. No sign-up needed. For teachers: assign any experiment to a class, see results and calculations.
What you do
- Set the amount to 10 mL. Add solution B twice (20 mL) to beaker 1 and wait.
- In beaker 2 add 10 mL of water first, then 10 mL of solution B.
- Compare the two times in the observations: how does concentration change the rate?
More experiments on this topic