Multiple choice

Water has highest density at

  1. 00 C

  2. 40 C

  3. 1000 C

  4. 100 C
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Water reaches its maximum density at approximately 4°C (39°F). This unusual property occurs because water molecules form a highly ordered structure as temperature decreases from 4°C to 0°C, causing expansion. This property is crucial for aquatic life as ice floats, insulating the water below and allowing organisms to survive under frozen surfaces.

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