Classify each of the following as cations, anions, or atoms.

a.) Be

b.) Na+

c.) Cu2+

d.) I-

e.) O2-

f.) Ca2+


And if you could tell me how you got the answers that would just be terrific! Thanks in advance.

Cations are positive
Anions are negative
Atoms are neutral particles of one element

1. Atom
2.Cation
3. Cation
4. Anion
5. Anion
6. Cation

-An atom is the smallest, uncharged particle that can participate in a chemical reaction. [Identification: a chemical symbol without the '+'&'-' sign]
-A cation is an ion which is positively-charged, which is formed after a METAL atom donates its electron(s). [Identification: a chemical symbol with the '+' sign]
-An anion is an ion which is negatively-charged, which is formed after a NON-METAL atom receives electron(s). [Identification: a chemical symbol with the '-' sign]

a. Be - atom [beryllium atom]
b. Na+ - cation [sodium ion]
c. Cu2+ - cation [copper ion]
d. I- - anion [iodide ion]
e. O2- - anion [oxide ion]
f. Ca2+ - cation [calcium ion]