Multiple choice

When water is heated from 0o C to 10o C, the volume of water

  1. decreases

  2. first decreases then increases

  3. increases

  4. first increases then decreases
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Water exhibits anomalous expansion between 0°C and 4°C. As water warms from 0°C to 4°C, it actually becomes denser (volume decreases) because the hydrogen bonds reorganize into a more compact structure. Above 4°C, water expands normally with heating. This unique property is why ice floats and water has maximum density at 4°C.

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