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As pure water approaches its freezing point, the density decreases. Why does this happen?

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As pure water approaches its freezing point, the density decreases. Why does this happen?

As pure water approaches its freezing point, the density decreases. Why does this happen?
a. The water compresses into ice.
b. The hydrogen bonds become rigid, allowing it to expand slightly.
c. The hydrogen bonds break as the molecules compress.
d. Ice takes up a smaller surface area than liquid water

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