Have a go.

Chemistry Card Lab is Dr J. Fennell's Edexcel IGCSE booklet turned into a game. One topic is open here, and all of it works: the cards, the past paper, the A Level crossing, and a battle against anyone else trying it.

• 1cAtomic Structure, all of itThree cards, the boss paper, and the prism run that opens the A Level reading.
• VSA battleFive questions against another visitor, same clock. Nobody at the school can be matched against you.
• •The rest is visible, not openExactly how a class sees a topic their teacher has not got to yet.

No sign up, no email. The account lasts a week and then clears itself.
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