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13 December, 13:26

Which is a compound?

calcium

air

iodine

water

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Answers (2)
  1. 13 December, 14:55
    0
    I'm sure it's Calcium
  2. 13 December, 16:10
    0
    Air as it contains many different elements making it a compound and not a element or molecule. a example of a element is iodine and calcium and an example of a molecule is water of dihydrogen monoxide aka 2 H and 1 O in a molecule.
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