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TGE1: Density
Notes on the ‘three crowns’ animation
The key point for students to grasp is that the pure substance used for the gold crowns has a unique density, so any other density means it is not pure gold.

The density of the fake crown is noticeably less than that of gold and is much closer to that of lead. This is the nearest density value to the measured value, and students should be able to suggest that lead was used instead of gold. (Assume that enough gold was used to make sure that the surface looked the right colour!)

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Density in the solid and liquid state is the end of the Foundation 'Substances' Topics section.
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