Properties of Water

The partial polarity of water molecules: a. promotes formation of hydrogen bonds b. helps water dissolve nonpolar solutes c. lowers heat of vaporization d. none of these choices is correct e. more than one of the choices is correct

Ice floats on water because:  a. The molecules are closer together in ice than in water b. The molecules are farther apart in ice than in water c. Ice is more dense than water

Water is best described as which of the following?  a. An ion b. A non-polar molecule c. An atom d. A polar molecule e. An element

Individual water molecules bind to each other through:  a. Covalent bonds b. Ionic bonds c. Hydrogen bonds d. Hydrophobic bonds e. Non-polar bonds

Within a single molecule of water, ____ bonds are formed between oxygen and hydrogen.a. Ionic bondsb. Covalent bondsc. Hydrogen bondsd. Hydrophobic bonds

The emergent properties of water (cohesion, high heat capacity, good solvent) come from the fact that water is ______ and ______ hydrogen bond. a. polar, can b. polar, cannot c. non-polar, can d. non-polar, cannot

Cohesion is a property of water in which water molecules tend to stick together.  a. True b. False

A substance in which other substances dissolve is called a solute.  a. True b. False

If ice were more dense than water, then during the winter most organisms living in ponds and lakes in colder climates would become entrapped in ice and freeze.  a. True b. False