Multiple choice

The substance found in three forms liquid, solid and gas is

  1. water

  2. air

  3. ice

  4. mercury

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

Water is the only common substance that naturally exists in all three states of matter - solid (ice), liquid (water), and gas (water vapor) at Earth's surface temperatures. Ice is solid water, not a separate substance.