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Chapter 11: Carbon and Some of Its Compounds
— The element that builds diamonds, writes pencils, and breathes life into plants. —
Why this matters
(I once held up a diamond ring and a pencil in front of a class. I asked, "What do these two things have in common?" Everyone laughed. Then I said, "They are both made of pure carbon." The room went silent. A diamond — the hardest natural substance on Earth — and graphite — one of the softest. Same element. Completely different properties. That i
