Titanium Dioxide Photocatalysis: A New Kind of Water Treatment

Part of a series of resources investigating how using titanium dioxide as a photocatalyst can help to create cleaner water using sunlight.

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Smartphone spectroscopy: Beer–Lambert law
Use your smartphone to measure changes in concentration across different concentrations of squash at home or in the classroom. Use your results to predict the concentration of an unknown dilution of squash.
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The Gibbs free energy | Post-16 thermodynamics tutorials
Use this tutorial, including a video demonstration, to help post-16 students learn about equilibrium, the Gibbs free energy and the feasibility of reactions.
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Entropy | Post-16 thermodynamics tutorials
Try this tutorial with accompanying videos to help teach students on post-16 courses about the concept of entropy and the second law of thermodynamics.