Properties of Water

Which of the following is not a property of water?

• Hydrogen bonds exist only in the solid state.

• It can dissolve ionic and polar molecules.

• It has a high surface tension.

• The solid state is less dense than the liquid state.

Water’s unique properties arise because of its ability to form strong:

• covalen bonds

• hydrogen bonds

• dipole bonds

• ionic bonds

Ice floats on water because:

• liquid water is less dense than ice

• water's surface tension is strong enough to support the ice

• there is oxygen dissolved in liquid water

• the molecules in ice are farther apart than the molecules in liquid water

A property of water that is vital to supporting life is that:

• water is transparent

• water can dissolve a wide variety of substances

• water is found naturally on Earth as a liquid, solid, and gas

• water molecules are not charged

Cohesion is:

• exemplified by the action of water droplets sticking to your drinking glass

• a property that allows water to dissolve certain substances

• a phenomenon that occurs only at the surface of water

• an attraction between molecules of the same kind

Delle Colombe’s ebony disk did not sink in water because:

• Water molecules on the surface of water form strong hydrogen bonds that can withstand the distributed weight of the disk.

• The disk was flat, and all flat objects will remain suspended on the surface of water.

• Water droplets that form on the bottom of the disk connect to each other and support the disk.

• Ebony is less dense than water.

Oxygen can dissolve in water because:

• polar water molecules induce a temporary dipole in oxygen molecules

• oxygen gas is made of polar molecules

• water is a bipolar molecule

• both water and oxygen gas are small molecules, so there is sufficient space for one to dissolve in the other

Drops of dew on a leaf owe their spherical appearance to:

• cohesion

• adhesion

• the density of water

• cohesion, adhesion, and surface tension

Capillary action of water in a tube is the result of _____ being stronger than _____.

• cohesion; adhesion

• adhesion; cohesion

• surface tension; cohesion

• cohesion; surface tension

A frozen lake in winter with fish swimming below the surface is possible because of which property of water:

• cohesion

• adhesion

• low molecular weight

• polarity