Multiple choice

Water is a compound because

  1. it exists as solid, liquid or gas

  2. it contains hydrogen & oxygen

  3. it cannot be split up into simpler substances by chemicals means

  4. it contains two different elements joined by chemical bond

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

A compound is a substance formed when two or more elements are chemically bonded together in a fixed ratio. Water (H2O) fits this definition.