Unit 18 · Carbon and its Compounds

The Nature of Carbon Presentation

ScienceSubject
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Science and Technology, Class 9

The Nature of Carbon

Valency four · Catenation · Allotropes

What We Learn Today

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Why carbon's valency is four

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What catenation is

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Allotropes and allotropy

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Carbon's physical properties

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Presenter notes: Students are surprised to hear that coal and diamond are the same element. Open with that surprise: today's lesson shows how it is possible.