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Material Magic: Making Diamonds

From Crash Course Kids · 2015

Material Magic: Making Diamonds
5 min4th5th6thScience
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Summary

Uses diamonds as the ultimate case study in materials science — showing that diamonds and graphite are both pure carbon but have completely different properties because of how their atoms are arranged. A vivid lesson in structure-property relationships.

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All ages
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Teaching resources

Discussion questions

Discussion

  1. What element makes up both diamonds and graphite?
  2. Why is diamond one of the hardest materials on Earth while graphite is soft enough to write with?
  3. How can two materials made of the same atoms be so different?
  4. Can scientists make synthetic diamonds? How? Why would you want to?

Quick work-a-long

Vocabulary: carbon, atom arrangement, structure, property, crystal, hardness, synthetic.

Try it: Compare a pencil (graphite) and a glass cutter or a rough diamond chip's description. Write one sentence explaining what is the same about them (both carbon) and one explaining what is different (atomic structure → property).