Can you finish secret agent beakers task to save your planet?
There are rules for naming!!
When Metals combine with non metals –Metal loose one or more electron (becomes cation Ex: Mg2 +) –Non metal gains one or more electrons (becomes anion Cl - ) These are called binary compounds Cations are always named first Anions are always second Have an ide ending Ex” NaCl Sodium Chloride
When naming Ionic compounds with Transition metals When metals form more than one ion there are different rules(Transition Metals) Ex Pb forms Pb 2+ and Pb 4+ We must distinguish what type of Lead we are talking about Scientists use a roman numeral to distinguish what type of a metal is being used
How do you know the type of Lead being used? You must examine how the ions combined All Compounds are neutral so in PbO 2 the Pb ions must balance the O 2- ions. It must be Pb(IV) because there are 2 O ions (from 2 subscript). Thus PbO 2 is called Lead(IV)Oxide
Name the following PbBr 2 PbBr 4 LiCl MgO Lead(II)BromideLead(IV)Bromide Lithium Chloride Magnesium Oxide
What about those crazy Polyatomic Ions? Polyatomic ions are ions that are composed of more than one element Together they contain a charge Ex- OH - = Hydroxide has a charge of -1 NH 4 + = Ammonium has a charge of +1 SO 4 2- = Sulfate and has a charge of -2
There are rules for naming these as well YOU MUST LEARN TO RECOGNIZE POLYATOMIC IONS Similar to rules for naming binary ionic compounds Cation first then anion, but no ide Ex: NaOH= Sodium Hydroxide Must distinguish what type of metal it contains Ex Fe(NO 3 ) 3 = Iron(III)Nitrate When writing polyatomics you must put use parenthesis to determine HOW MANY of each poly atomic.
Name the following Cu(NO 3 ) 2, PbCO 3, NH 4 I NaCN Copper(II) Nitrate, Lead(II) Carbonate, Ammonium Iodide, Sodium Cyanide
Compounds that contain non metals(molecules) There are different rules when a compounds contains only nonmetals Ex: B,C,N,O,F, The first element in the formula is named first,and the full element name is used The second element is named as though it were an anion Prefixes are used to tell the number of atoms present
Prefixes are Mono-1 Di-2 Tri-3 Tetra-4 Penta-5 Hexa-6 Hepta-7 Octa- 8 Note, mono is not used when describing the first atom
Ex: CO 2 Name is Carbon dioxide N3O5N3O5N3O5N3O5 Name is trinitrogen pentoxide PCl 3 Name is Phosphorous trichloride
Try These I 2 O 7, CF 4,IF 5 Diiodine heptoxide, Carbon tetrafluoride, Iodine pentafluoride
Name the following –BF 3, NaCl, CCl 4, FeS, AlBr 3,N 2 O 5, CuCl Na 2 SO 4, KI Boron trifluoride, Sodium Chloride, Carbon tetrachloride, Iron(II) Sulfide, Aluminum bromide dinitrogen pentoxide,, Copper(I)Chloride, Sodium Sulfate, Potassium Iodide