2. Compare the following terms: a. an otom and a molecule
b. an atom and an ion
c. a cation and an anion

a.

Atoms are the building blocks of matter. Molecules are group of two or more atoms bonded together.

b.

Atoms are neutral; they contain the same number of protons as electrons. An ion is an atom or molecule that has a different number of electrons than protons, so it has a charge.

c.

Cations are positively charged ions. Anions are negatively charged ions.

answer; /// the amount of material dissolved in a measure of liquid(concentration) the above statement is (true); /// good luck

false

because it does not have the potential to be entirely used up