A.1 (Water and Nucleic Acids) Review

Name the intermolecular bond between water molecules.

• Ionic bond

• Hydrogen bond

• Covalent bond

• Peptide bond

Which term describes the way in which water molecules are attracted to other water molecules?

• Cohesion

• Adhesion

• Surface tension

• Capillary action

Which term describes the way in which water molecules are attracted to other other molecules?

• Cohesion

• Adhesion

• Surface tension

• Capillary action

What name is given to a molecule which has a positive and a negative charge in different areas?

• Polar

• Non-polar

• Hydrophobic

• Hydrophilic

Ice floats on water because

• adhesion

• cohesion

• water expands when it freezes

• water shrinks when it freezes

Capillary action is....

• adhesion

• cohesion

• change in matter (heat of fusion)

• both adhesion and cohesion

What property of water is in this picture?

• high specific heat

• surface tension

• greatest density at 4^oC

• capillary action

Large bodies of water do not quickly fluctuate in temperature. Why?

• Water is a solvent.
• Water has a high heat capacity.
• Water acts as a buffer.
• Water is non-polar.

Attractions between water molecules are called

• Covalent bonds
• Ionic bonds
• Polar bonds
• Hydrogen bonds

What property of water helps to moderate earth's temperature?

• adhesion
• chohesion
• Specific heat capacity
• Latent heat of vaporization