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BiologyBiology
12 October, 01:13

Which is a compound?

calcium

air

iodine

water

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Answers (2)
  1. 12 October, 01:34
    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.
  2. 12 October, 01:36
    0
    I'm sure it's Calcium
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