Notes Aug 29 2013 Quizzes 8 am 6 30 pm B transition metals can form more than 1 cation Fe2 iron II chloride Fe3 Iron III chloride Ions are the result of loss or gain of electrons ConcepTest Which set of formulas represent correct ionic compounds A KNO3 NaHCO3 good good B CaNO3 CaSO4 2 bad 2 2 good C AlNO3 AlPO4 3 bad 3 3 good D MgSO4 LiCO3 2 2 good 2 bad K NO3 whole nitrate ion has a negative charge Elemental ions single atom complex ions 2 or more atoms Sulfate SO42 Hydrogen sulfate HSO4 H2SO4 sulfuric acid Carbonate CO32 Hydrogen carbonate HCO3 H2CO3 carbonic acid Phosphate PO43 Hydrogen phosphate HPO42 Dihydrogen phosphate H2PO4 H3PO4 phosphoric acid Ionic compounds i e salt Cation anion combo Neutral all charges must equal all charges Cations Metal Monoatomic elemental use metal names Transition metals indicate charge with Roman numeral Complex or special NH4 ammonium derived from NH3 ammonia Anions nonmetal Monoatomic add ide Polyatomic Phosphate hydrogen phosphate dihydrogen phosphate sulfate hydrogen sulfate carbonate hydrogen carbonate nitrate ConcepTest Bicarbonate of soda or baking soda refer to sodium hydrogen carbonate What is the correct formula for this ionic compound A NaCO3 B NaHCO3 C Na2CO3 D Na2CO3 H2 E Na2H2CO3 Mole 6 022 x 1023 particles 1 mole collective unit Avogadro s number Atomic mass of element ex 12 01 g C 1 mole C 6 022 x 10 23 atoms C Ex 26 98 g Al 1 mole Al Moles are the same not the masses are the same CO2 How many moles of C atoms are used to make 1 mole of CO 2 o 1 moles of carbon 12 01 g o 2 moles of oxygen 16 00 x 2 32 00 g o 12 01 32 00 44 01 44 g ConcepTest How many moles of nitrogen are contained in 0 5 moles of the ionic compound Ni NO 3 2 A 0 5 mol B 1 0 mol C 1 5 mol D 3 mol Molar mass atomic mass or weight ConcepTest Arrange these compounds in order of increasing formula weight KOH LiOH HOH A KOH LiOH B HOH LiOH KOH C LiOH KOH HOH D HOH KOH LiOH