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Platinum

Platinum is a rare metal with a surprisingly wide range of uses. This article explores how its physical properties make it ideal for such diverse applications as jewellery, bullion, thermometry and even standardising an SI unit, and finishes by considering a new source for this precious material

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The terms in bold link to topics in the AQA, Edexcel, OCR, WJEC and CCEA A-level specifications, as well as the IB, Pre-U and SQA exam specifications.

This article focuses on electrical and thermal conductivity, and the change of resistance with temperature, and shows how the thermoelectric effect can be exploited in a temperature sensor.

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