MCAS Chemistry Exam Practice

Category - Chemistry

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Which of the following statements best explains why ice floats on water?

Water has a higher specific heat than ice.
Ice has the same molecular mass as water.
Heat is absorbed when water changes from the solid state to the liquid state
Hydrogen bonding causes water to be less dense in the solid state than in the liquid state.

Explanation

Answer: D - Hydrogen bonding causes water to be less dense in the solid state than in the liquid state.

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