Multiple choice general knowledge science & technology

How many atoms are there in a molecule of H2O (water)?

  1. 2

  2. 1

  3. 4

  4. 3
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Water's formula is H2O, meaning 2 hydrogen atoms and 1 oxygen atom, totaling 3 atoms per molecule. Option A incorrectly counts only hydrogen, B is too few, and C is too many.

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