Multiple choice

Why will it melt faster in water?

  1. Water molecules will be moving faster than air molecules

  2. Air molecules will be more dense than water molecules

  3. Air molecules move randomly and water molecules don't

  4. Water molecules are more dense and collide more often
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Water is much denser than air, meaning there are more molecules per unit volume to collide with the ice cube, facilitating faster heat transfer.

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