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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.
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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