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Bitesize - Acids, Bases & Metals
Revise this topic and try the quiz at the end.

pH scale and universal indicator revision video
Watch this video to recap what you have learned about the pH scale, universal indicator and the effect of carbon dioxide on the pH of the oceans.

Gridlocks (RSC)
Select the topic you want from the list on the right. There is a video on the homepage to help you understand how to play Gridlocks.

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