UNIT 3 REVIEW

all TWO element compounds (two capital letters) end in –IDE, whether molecular or ionic NF3 nitrogen trifluoride CaCl2 calcium chloride

diphosphorus pentoxide MOLECULAR COMPOUNDS: - start with a NON-METAL - use PREFIXES in the name P2O5 diphosphorus pentoxide

IONIC COMPOUNDS: - start with a METAL - NO prefixes in name - if given name write SYMBOL and CHARGE above names to find formula

KF potassium fluoride Mg2+ P3- magnesium phosphide Mg3P2

copper (II) chloride CuCl2 If the metal can have more than one charge, use ROMAN NUMERALS in the name: Cu2+ Cl- copper (II) chloride CuCl2

if non-metal is POLYATOMIC ION, compound ends in –ITE or –ATE: KNO3 potassium nitrate Na2SO4 sodium sulfate

CO2, O2-, F2, Na2SO4, PO43-, Na+, C, KOH, Al3+ , P4, NO2-, Si, N2O5, Fe2O3, Br- Which are… Atoms? Molecules ? Ions? Ionic compounds: Elements: C Si CO2 F2 P4 N2O5 O2- PO43- Na+ Al3+ NO2- Br- Fe2O3 Na2SO4 KOH C Si P4 F2

write formula and then name for: N2O4

dinitrogen tetroxide

SeF2

selenium difluoride

B4C

tetraboron monocarbide

MgI2

magnesium iodide

Ag2S

silver sulfide

AlBr3

aluminum bromide

sodium oxide

Na2O

lithium phosphide

Li3P

LiNO3

lithium nitrate

beryllium arsenide

Be3As2

iron(II) sulfide

FeS

chromium (III) fluoride

CrF3

lead (IV) hydride

PbH4

barium hydroxide

Ba(OH)2

NiN

nickel (III) nitride

MnO2

manganese (IV) oxide

K3PO4

potassium phosphate

TiCl3

titanium (III) chloride

NH4F

ammonium fluoride

MgCO3

magnesium carbonate

calcium chlorate

Ca(ClO3)2

lithium phosphate

Li3PO4

aluminum nitrate

Al(NO3)3

Pb(NO3)2

lead(II) nitrate

nitrogen triiodide

NI3

sodium sulfide

Na2S

SrSO4

strontium sulfate

carbon tetrachloride

CCl4

BBr3

boron tribromide

nickel (III) carbonate

Ni2(CO3)3

zinc oxide

ZnO

RbH

rubidium hydride