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These resources have been reviewed and selected by STEM Learning’s team of education specialists for factual accuracy and relevance to teaching STEM subjects in UK schools.

How deep is your blue? Coloured chemistry with smartphones

In this activity students use a smartphone to determine the precise amount of copper in an aqueous solution of nitric acid. Students collect comparative values of different copper-solutions with special apps to produce a diagram and estimate the amount of copper, based on the Lambert-Beer Law that explains that the absorption of light is proportional to the concentration of the dissolved colorant.

 

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