Bellwork: Each partner needs a half white board. Complete the table. name symbol Metal or nonmetal Ion calcium   sulfur bromine lithium nitrogen Get out Homework Last Class Period

Bellwork: name symbol Metal or nonmetal Ion calcium sulfur bromine   sulfur bromine lithium nitrogen

  Rules for ___________________________________________ Writing names Writing Formulas

Rules for ________Ionic Compounds with 2 elements__________ Writing names metal first and then nonmetal Name the metal first. Do not change its name. Name nonmetal second; change the ending to –ide. Writing Formulas the charges must balance out; therefore the should be no charge on the compound

CaCl2 ________________________________ BeO ________________________________ SrBr2 ________________________________ Li2S ________________________________ BaI2 ______________________________ Na3N ________________________________

CaCl2 _calcium chloride_______________ BeO __beryllium oxide _____________ SrBr2 __strontium bromide _____________ Li2S ___lithium sulfide _______________ BaI2 ____barium iodide______________ Na3N _____sodium nitride _____________

lithium iodide ________________________________ magnesium bromide ________________________________ cesium oxide ________________________________ beryllium nitride ________________________________ calcium sulfide ________________________________ potassium chloride ________________________________

lithium iodide _______LiI _________________________ magnesium bromide ___MgBr2_____________________ cesium oxide ________Cs2O________________________ beryllium nitride ______Be3N2_______________________ calcium sulfide _________CaS_______________________ potassium chloride ______KCl__________________________

Switching Trick

  Rules for ___________________________________________ Writing names Writing Formulas

NH4NO3 ________________________________ MgSO4 ________________________________ AlPO4 ________________________________ K2SO4 ________________________________ NaHCO3 ________________________________ LiCN ________________________________

NH4NO3 __ammonium nitrate_____________ MgSO4 _magnesium sulfate ______________ AlPO4 ___aluminum phosphate ___________ K2SO4 _potassium sulfate _______________ NaHCO3 ___sodium hydrogen carbonate __ LiCN _lithium cyanide ________________

ammonium nitrate ________________________________ calcium sulfate ________________________________ lithium phosphate ________________________________ magnesium carbonate ________________________________ calcium hydroxide ________________________________ calcium nitrite ________________________________

ammonium nitrate ____NH4NO3______________________ calcium sulfate __CaSO4______________________________ lithium phosphate ___Li3PO4_____________________________ magnesium carbonate _____MgCO3__________________________ calcium hydroxide ____Ca(OH)2___________________________ calcium nitrite ______Ca(NO2)2__________________________

How would the formulas of beryllium nitride and beryllium nitrate be different?

How would the formulas of beryllium nitride and beryllium nitrate be different? Be3N2 Be(NO3)2 Even the smallest change in the name can mean a big difference in the formula. It is very important to pay attention to detail.

FeCO3 iron (II) carbonate CuNO3 copper (I) nitrate

Rules for Naming Ionic Compounds Writing names Show the charge of the transition metal with a Roman numeral. This can be determined by looking at the nonmetal. Writing Formulas Balance the compound by using the charge indicated by the roman numeral in the name.

CoCl3 _______________ CrF6 _______________ AgBr _____________________ Fe2O3 _____________________ CrF3 _______________________ SnCl4 _______________________

CoCl3 _cobalt (III) chloride _______________ CrF6 _chromiun (VI) fluoride ______________ AgBr _silver bromide ____________________ Fe2O3 __iron (III) oxide ______________ CrF3 __chromium (III) fluoride ________ SnCl4 __tin (IV) chloride_____________

manganese (IV) oxide ____________________________ nickel (II) chloride _______________________________ zinc chloride ___________________________________ lead (IV) sulfide ________________________________ cobalt (III) oxide ________________________________ chromium (III) oxide ________________________________

manganese (IV) oxide _______MnO2__________________ nickel (II) chloride ____NiCl2____________________________ zinc chloride ____ZnCl2____________________________ lead (IV) sulfide _____PbS2___________________________ cobalt (III) oxide ____Co2O3____________________________ chromium (III) oxide ___Cr2O3_____________________________

Naming Molecular Compounds Remember that binary molecular compounds are substances that consist of just two different elements. Nomenclature: 1) Name the first element that appears in the formula. 2) Name the second element that appears in the formula, changing its ending to –ide.

Naming Molecular Compounds Greek prefixes are used to denote the number of atoms of each element present.

The prefix mono- is generally omitted for the first element. Naming Molecular Compounds The prefix mono- is generally omitted for the first element. For ease of pronunciation, we usually eliminate the last letter of a prefix that ends in “o” or “a” when naming an oxide. Example: N2O5 is dinitrogen pentoxide not dinitrogen pentaoxide

OF2 __oxygen difluoride_______________ PCl3 __phosphorus trichloride __________ SO3 ___sulfur trioxide _____________ NI3 __nitrogen triiodide ________________ SiBr2 __silicon dibromide _______________ BrF5 ___bromine pentafluoride _________

disulfur dichloride _____S2Cl2________________________ xenon tetrafluoride ___XeF4_____________________________ phosphorous pentabromide ___PBr5________________________ bromine monofluoride ____BrF____________________________ dinitrogen tetrafluoride ___N2F4__________________________ diboron trioxide ___B2O3_____________________________