Calcium rocks! Well, in this case, calcium carbonate is a little more accurate. Part four in a series of seven, the video describes how the seashells of ages past compressed to form one of Earth's most useful sedimentary rock resources. Learners discover the limestone cycle, plus gain valuable experience in writing chemical equations and predicting products.

Concepts

limestone, endothermic reactions, exothermic reactions, calcium carbonate, compression, seashells, sedimentary rocks

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Additional Tags

science

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Instructional Ideas

• Pause the video, when directed, and discuss the key elements of the limestone cycle as a class
• Let students examine samples of limestone, then compare them with other sedimentary rocks

Classroom Considerations

• Pupils should be familiar with writing and balancing chemical equations, as well as polyatomic ions

Pros

• Although prior knowledge of the chemistry concepts involved is helpful, the resource presents the material in a manner that non-chemistry high school scientists can follow
• The narrator provides a detailed recap of all topics, making this a useful review tool

Cons

• None