• series of new resources on A-level period 3 elements and oxides – these take a more fundamental approach that focus on understanding key ideas from which the chemistry can be deduced (rather than trying to learn facts). The old resources are still there – but try the new ones instead!
  • New KS3 Investigation on rate of diffusion that gives quantitative results.
  • More KS3 Quick-checks on gases in airenergy changes in reactionsconservation of mass and oxidation & reduction.
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