Allotropes of sulfur

A small heap of purified yellow sulfur powder against a neutral background

Source: © Shutterstock

Use this practical to explore the changes in the colour and consistency of sulfur as you heat it, melt it and eventually boil it. Includes kit list and safety instructions.

In this experiment, students observe what happens when sulfur is heated slowly and steadily from room temperature until it melts and boils.

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