Multiple choice general knowledge

What is the chemical formula for ice ?

  1. N2O

  2. H2O

  3. NO2

  4. None
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Ice is solid water, so its chemical formula remains H2O (two hydrogen atoms bonded to one oxygen atom). Freezing water doesn't change its chemical composition, only its physical state. N2O is nitrous oxide and NO2 is nitrogen dioxide.

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