Compound Names and Formulas Binary Ionic Compounds Binary Molecular Compounds Polyatomic Ionic Compounds Organic Hydrocarbons Acids

Binary Ionic Compounds Compounds composed of a metal cation and a nonmetal anion First name is the name of the metal Second name is the name of the nonmetal with an ide suffix Ex. NaCl is sodium chloride

Molecular Binary compounds Composed of two elements both of which are nonmetals. No ions present First name is name of the first element with prefix Second name is name of second element with prefix Prefix indicates subscript number: mono, di, tri, tetra, penta, hexa, hepta, octa, nona and deca Ex: Carbon monoxide – CO2

Polyatomic Ionic Compounds Composed of metal cation and anion made up of two or more nonmetal atoms with a net negative charge First name is name of metal cation Second name is name of polyatomic anion Ex. Sodium sulfate – Na2SO4

Organic Compounds Hydrocarbons are made up of carbon and hydrogen atoms Alkanes have the formula: CnH2n+2 Prefix defines the n value: n=1-9 meth, eth, pro, but, pent, hex, hept, oct, non, and dec Name ends with ane suffix Ex: methane – CH4

Binary Acids All acids contain hydrogen ion: H+ In binary acids the anions is a monoatomic nonmetal anion Generic formula: HA Prefix: hydro Suffix: ic Ex. Hydrochloric acid - HCl

Polyatomic Acids All acids contain hydrogen ion: H+ In polyatomic acids the anion is a polyatomic anion Generic formula: HA Prefix: none(unless polyatomic anion name has one) Suffix: ic(ate) or ous(ite) Ex. chloric acid – HClO3 Ex: hypochlorous acid – HClO

Writing formula for ionic compounds from formula MxAy will be MyAx Example: Calcium(2+) nitrate(1-) – Ca(NO3)2 Ammonium(1+) carbonate (2-) – (NH4)2CO3

Writing Molecular formula from name for binary molecular formulas Prefix indicates subscripts for that element Dinitrogen pentoxide: N2O5

Writing Alkane formula from name Prefix indicates carbon subscript, H subscript is 2n+2 Ethane: C2H6

Writing Acid Formula from Name First determine if it is binary, it will have a hydro prefix and ic suffix All acid formulas begin with hydrogen ion Treat them like an ionic binary compound Determine anion element and charge Ex: hydrosulfuric acid – H2S

Polyatomic acids Determine the anion and its charge Treat it like a polyatomic ionic compound Ex: nitric acid – HNO3 Ex: phosphoric acid – H3PO4

Quiz Time!

Identify the formula for: barium nitrate A. Ba3N2 B. Ba(NO2)2 C. BaNO2 D. BaNO3 E. Ba(NO3)2

Identify the formula for: chromium (III) phosphate A. Cr3PO3 B. Cr3(PO4)2 C. Cr2(PO4)3 D. CrPO4 E. Cr3(PO4)3

Identify the formula for: Ammonium nitrate A. NH4NO3 B. NH4NO2 C. NH3NO3 D. NH3NO2 E. (NH4)NO2

Identify the formula for: Copper (II) bromide A. CuBr B. CuBrO3 C. Cu(BrO3)2 D. CuBr2 E. Cu(BrO4)2

Identify the formula for: Copper (II) bromide A. CuBr B. CuBrO3 C. Cu(BrO3)2 D. CuBr2 E. Cu(BrO4)2

Identify the formula for: Sulfur Hexafluoride A. SF B. SF6 C. SF4 D. S4F6 E. SF8

Identify the formula for: Octane A. C6H6 B. C6H12 C. C8H8 D. C8H16 E. C8H18

Identify the formula for: Hydroiodic Acid A. HI B. H2I C. HIO3 D. HIO2 E. HIO4

Identify the formula for: Sulfuric Acid A. HS B. H2S C. H2SO4 D. H2SO3 E. H3SO3

Identify the formula for: Tetraphosphorus Decoxide A. PO5 B. P2O5 C. P4O8 D. P4O10 E. P5O10