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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.

Chemistry - pH

From the Integrating Mathematical Problem Solving project by Mathematics in Education and Industry (MEI), this activity for post-16 students demonstrates that the acidity of a solution depends on the number of hydrogen ions per litre; the number of hydrogen ions per litre varies so much that a logarithmic scale is used. Topic areas covered are:
• Logarithms to base 10
• Powers of 10 and standard form
• Logarithmic scale

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