Properties of Water Answers

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Water has a “bent” geometry. Which properties of water create this molecular shape?

A
Water’s oxygen has no lone electron pairs.
B
Water’s oxygen has lone electron pairs that repel each other.
C
Water is nonpolar.
D
Water is ionic.
2
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Which processes are involved when water dissolves sugar? Check all that apply.

A
dissociation
B
hydration
C
increase of the surface area of the solute
D
ionization
3

Describe the molecular structure of water, and explain why it is a polar molecule.

Answer:

Water (H2O) consists of two hydrogen atoms covalently bonded to one oxygen atom. It is a polar molecule because oxygen is more electronegative than hydrogen, meaning it pulls the shared electrons more closely. This results in a partial negative charge on the oxygen atom and a partial positive charge on the hydrogen atoms. Additionally, the molecule's bent shape prevents these charges from canceling out, creating a net dipole.

4

Which unusual properties are a result of water’s hydrogen bonding? Check all that apply.

A
high boiling point
B
high specific heat
C
higher density as a solid than as a liquid.
D
high surface tension

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Properties of Water Answers — EO Chemistry 7320B