In this classic experiment, from the Royal Society of Chemistry, students carry out a series of experiments to demonstrate different aspects of the lime cycle. Calcium carbonate is heated to form calcium oxide, which is dissolved in water to form limewater, which students blow bubbles through to turn cloudy.

The resource is set out as teachers' notes followed by the students' page which presents the task to be investigated. A list of apparatus and chemicals needed for the investigation is provided, together with teaching tips.

Curriculum links include: calcium carbonate, limestone, the lime cycle.

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