Multiple choice

At what temperature is the density of water maximum?

  1. 0°C

  2. 4°C
    • 4°C

  4. 100°C

  5. 50°C
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

When cooled from room temperature liquid water becomes increasingly dense, as with other substances, but at approximately 4°C (39°F), pure water reaches its maximum density. As it is cooled further, it expands to become less dense.

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