Quiz 0.5 CHEM 131

Atoms

the smallest unit or particle of an element

Compound

composed of two or more different types of elements

Elements

composed of only one type of atom

Molecule

the smallest unit of a compound

Z

atomic number, represents \# of protons; located on bottom

A

mass number, \# of protons + \# of neutrons; located on top

Diatomic elements

Hydrogen, nitrogen, oxygen, fluorine, chlorine, bromine, iodine

Covalent/Molecular compounds

made of all non-metals

Ionic compounds

metal and non-metal

Cations (Metals) Group 1

1+

Cations (Metals) Group 2

2+

Anions (Non-metals) Group 15

3-

Anions (Non-metals) Group 16

2-

Anions (Non-metals) Group 17

1-

Anions (Non-metals) Group 18

0

Aluminum Ionic Charge

3+

Zinc Ionic Charge

2+

Silver Ionic Charge

1+

NH₄⁺

ammonium

Hg₂²⁺

mercury (I)

CN⁻¹

cyanide

O₂²⁻

peroxide

OH⁻

hydroxide

CH₃CO₂⁻

acetate

NO₂⁻

nitrite

NO₃⁻

nitrate

ClO⁻

hypochlorite

ClO₂⁻

chlorite

ClO₃⁻

chlorate

ClO₄⁻

perchlorate

MnO₄⁻

permanganate

HCO₃⁻

bicarbonate

CO₃²⁻

carbonate

C₂O₄⁻²

oxalate

CrO₄⁻²

chromate

Cr₂O₇²⁻

dichromate

SO₃²⁻

sulfite

SO₄²⁻

sulfate

HPO₄²⁻

hydrogen phosphate

HSO₄⁻

hydrogen sulfate

PO₄³⁻

phosphate

H₃O⁺

hydronium

1 atom

mono

2 atoms

di

3 atoms

tri

4 atoms

tetra

5 atoms

penta

6 atoms

hexa

7 atoms

hepta

8 atoms

octo

9 atoms

nona

10 atoms

deca