Properties of Water

When water dissolves salt, which process is not involved?

C. ionization

Water's boiling point would be close to

-70 degrees C

Which statements are true based on specific heat? Check all that apply.

A. Land heats up/cools down faster than water. B. Regions with moderate climates often have large bodies of water surrounding them.

Which of these substances most likely dissolve in water? Check all that apply.

B. glucose, a polar organic compound C. silver nitrate, an ionic compound

Water has a ____ capacity to retain heat, keeping moderate climates warmer in the winter.

High

Water has a ____ surface tension, allowing adhesion, cohesion, and capillary action.

High

Dissolving salt in water reduces the intermolecular forces between water molecules. What most likely happens to the surface tension of water when salt is dissolved in it?

It decreases.

Water would release ____ heat in the winter to warm the land.

Little

Ice would ____ in water.

Sink

Adhesion, cohesion, and capillary action are properties of water most closely related to

Surface tension

Ice is less dense than water because

hydrogen bonding causes ice to have a hexagonal lattice

City A is located along the shore of an ocean. City B is at the same latitude and altitude, but it is located about 124 miles (200 km) inland, away from any large bodies of water. Which of the following statements most likely describe these two cities? Check all that apply.

A. In the summer, the daytime temperature in City A is typically lower than the daytime temperature in City B. B. In the winter, the daytime temperature in City B is typically lower than the daytime temperature in City A.

The attraction forces between mercury atoms in liquid mercury are stronger than the intermolecular forces between water molecules. Which of the following is most likely true about mercury?

A. It has a higher surface tension than does water.

Suppose oxygen was much less electronegative than it is, so that hydrogen-oxygen bonds were much less polar and hydrogen bonds could not form between water molecules. How would the properties of water most likely change? Check all that apply.

A. Its boiling point would decrease. C. Ice would sink in liquid water.

When water dissolves sugar, which process is not involved?

A. dissociation

Which of these statements would be true if the water molecule was linear instead of bent? Check all that apply.

B. The molecule would contain polar covalent bonds. C. Water would no longer produce hydrogen bonds.

Water has a "bent" geometry. Which explanation does not explain why?

C. Electrons are evenly distributed in the water molecule.

Which functions of water in living systems would still be possible if water was not polar and did not form hydrogen bonds? Check all that apply.

C. providing body support by exerting pressure on cell walls D. providing body support through buoyancy E. transport of nutrients within organisms

when water breaks apart an ionic compound into cations and anions:

Dissociation

when water breaks down substances and surrounds individual molecules or particles:

Dissolving

Water ____ as it freezes, so ice floats when expected to sink.

Expands

Water's boiling point is ____ abnormally than expected.

Higher

when water surrounds substances that have been "broken apart":

Hydration

Water readily dissociates ionic compounds, dissolves covalent molecules, and hydrates the smaller particles. This is most likely because

Water is a polar molecule