Identify four unusual properties of water that are a direct result of hydrogen bonding, and explain each in
terms of hydrogen bonding.

High boiling and melting points, high specific heat, lower density as a solid then as a liquid, and high surface tension. For High boiling and melting points, hydrogen bonds raise the amount of energy required for phase changes to occur, causing the rise of the boiling and melting points. High specific heat is unusual because hydrogen bonds increase the amount of energy required for molecules to increase in speed, which raises the specific heat. Lower density as a solid then a liquid can be explained by hydrogen bonds increasing the volume of the solid by holding molecules apart, thereby decreasing the density. With high surface tensions, hydrogen bonds produce strong intermolecular attractions, which increases the surface tension.

Explanation:

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