The hydrogen bonding that occurs in water is responsible for all of the following except
(a) The high boiling point of water
(b) The low freezing point of water
(c) The ability of water to dissolve nonpolar substances
(d) The ability of water to dissolve inorganic salts
(e) The surface tension of water

In an exergonic reaction,

(a) Large molecules are broken down into smaller ones.

(b) Small molecules are assembled into larger ones.

(c) Molecules are rearranged to form new molecules.

(d) Molecules move from reactants to products and back.

(e) Energy is released during the reaction.

A certain reaction pathway consists of four steps. How would decreasing the amount of enzyme that catalyzes the second step affect the amount of product produced at the end of the pathway?

A sample that contains an organic molecule has the following constituents: carbon, hydrogen, oxygen, nitrogen, and phosphorus. Is the molecule more likely to be a carbohydrate, a lipid, a protein, or a nucleic acid?

Explain the differences among nonpolar covalent bonds, polar covalent bonds, and ionic bonds.

What is a salt? How does a salt differ from an acid or a base?

An atom of the element calcium has 20 protons and 20 neutrons. Determine the following information about calcium:

(a) Number of electrons

(b) Atomic number

(c) Atomic weight

(d) Number of electrons in each energy level