EDS

Topics

• Physics & chemistry

  12

  Units, matter, energy, and everyday chemicals.

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• Biology & health

  11

  Human body, vitamins, and basic genetics.

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• Environment & earth

  9

  Atmosphere, climate, and earth science.

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Browse a few stems

1. 1The SI unit of electric current is the:
2. 2The chemical formula of water is:
3. 3The SI unit of force is the:
4. 4The pH of pure water at 25°C is approximately:
5. 5The boiling point of pure water at standard atmospheric pressure is:
6. 6The speed of light in vacuum is approximately:
7. 7The hardest naturally occurring mineral on the Mohs scale is:
8. 8NaCl is common table salt, a compound of sodium and: