UNIT 3 REVIEW

all TWO element compounds (two capital letters) end in – IDE, whether molecular or ionic NF 3 nitrogen trifluoride CaCl 2 calcium chloride

 MOLECULAR COMPOUNDS: - start with a NON-METAL - start with a NON-METAL - use PREFIXES in the name - use PREFIXES in the name P 2 O 5 diphosphorus pentoxide diphosphorus pentoxide

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

KF potassium fluoride Mg 2+ P 3- Mg 2+ P 3- magnesium phosphide Mg 3 P 2 Mg 3 P 2

 If the metal can have more than one charge, use ROMAN NUMERALS in the name: Cu 2+ Cl - Cu 2+ Cl - copper (II) chloride CuCl 2

if non-metal is POLYATOMIC ION, compound ends in –ITE or –ATE: KNO 3 potassium nitrate Na 2 SO 4 sodium sulfate

CO 2, O 2-, F 2, Na 2 SO 4, PO 4 3-, Na +, C, KOH, Al 3+, P 4, NO 2 -, Si, N 2 O 5, Fe 2 O 3, Br -  Which are… Atoms? Molecules ? Ions? Ionic compounds: Elements: CSi P4P4 CO 2 F2F2 P4P4 O 2- PO 4 3- Na + Al 3+ NO 2 - Br - Fe 2 O 3 Na 2 SO 4 KOH CSi N2O5N2O5 F2F2

 write formula and then name for: N 2 O 4

 dinitrogen tetroxide

SeF 2

 selenium difluoride

B4CB4CB4CB4C

tetraboron monocarbide

MgI 2

 magnesium iodide

Ag 2 S

 silver sulfide

AlBr 3

 aluminum bromide

sodium oxide

Na 2 O

lithium phosphide

Li 3 P

LiNO 3

lithium nitrate

beryllium arsenide

Be 3 As 2

iron(II) sulfide

FeS

chromium (III) fluoride

CrF3

lead (IV) hydride

PbH 4

barium hydroxide

Ba(OH) 2

NiN

nickel (III) nitride

MnO 2

manganese (IV) oxide

K 3 PO 4

potassium phosphate

TiCl 3

titanium (III) chloride titanium (III) chloride

NH 4 F

ammonium fluoride ammonium fluoride

MgCO 3 MgCO 3

magnesium carbonate

calcium chlorate calcium chlorate

Ca(ClO 3 ) 2 Ca(ClO 3 ) 2

lithium phosphate lithium phosphate

Li 3 PO 4 Li 3 PO 4

aluminum nitrate

Al(NO 3 ) 3

Pb(NO 3 ) 2

lead(II) nitrate lead(II) nitrate

nitrogen triiodide

NI 3

sodium sulfide

Na 2 S Na 2 S

SrSO 4 SrSO 4

strontium sulfate

carbon tetrachloride

CCl 4

BBr 3

boron tribromide

nickel (III) carbonate

Ni 2 (CO 3 ) 3 Ni 2 (CO 3 ) 3

zinc oxide

ZnO

RbH

rubidium hydride