When water freezes at 0 °C, spaces occur between its molecules, which results in its
Correct answer: B. Decrease in density
- A. Decrease in volume
- B. Decrease in density
- C. Increase in density
- D. Increase in volume
Explanation
Ice is less dense than water. Freezing causes a decrease in density because the water molecules form a more open and less dense structure in the solid state (ice).
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About Anomalous Behaviour of Water
Water expands when cooled below 4°C and when it freezes, giving liquid water its maximum density at 4°C. The explanation depends on hydrogen bonding and the open structure of ice, which makes ice less dense than water and allows it to float.
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