Chemical formulas and chemical compounds part I
Oxi numbers S8 H2 Fe S2- Al3+ Na2SO4 K2C2O4 Ba(NO3)2 NF3 (NH4)2SO4
0 0 0 + -2 +3 +1+6-2 +1+3-2 +2+5-2 +3-1 -3+1+6-2
Rules for writing the formula/naming simple covalent compounds
1st nonmetal add prefix if nessacery 2nd nonmetal add prefix and suffix Question 8
Which "other" metal is understood to be a certain anion
Aluminum 3+
salt
An ionic compound composed of a cation and the anion from an acid
12) name CO2 CO NO2 SO3 N2P5
Carbon dioxide Carbon monoide Nitrogen dioxide Sulfur trioxide dinitrogen pentaphosphide
8) write the names of the following CO2 CO Si2P5 N3Cl7
Carbon dioxide Carbon monoxide Disilicon pentaphosphide Trinitrogen Heptachloride
11) name CsCl2 BaS Cu2O FePO4 CoS Mn3N2 Al2(SO4)3 Zn(ClO3)2
Cesium chloride Barium sulfide Copper (I) oxide Iron (III) phosphate Cobalt (II) sulfide Manganese (II) nitride Aluminum sulfate Zinc Chlorate
binary compounds
Compounds composed of two elements
4) Give the names for the following compounds CuO CoF3 SnI4 FeS
Copper (II) oxide Cobalt (III) fluride Tin (IV) Iodide Iron (II) sulfide
Write the names of the following CuO why? How to check if you are right
Copper (II) oxide Cu? O2- Cu2+ O2- Cancel out 1 1 Check anion to get cation
3) Write the formula and give the name for the compound formed by the ions Cr3+ and F- Cu2+ and Br- Fe2+ and O2- Pb2+ and Cl- Hg2+ and S2- Sn2+ and F- Fe3+ and O2-
CrF3 Chromium (III) fluoride CuBr2 Copper (II) bromide FeO Iron (II) oxide PbCl2 Lead (II) chloride HgS mercury (II) sulfide SnF2 Tin (II) fluoride Fe2O3 iron (III) oxide
Charges in an ion reflect
ELECTRON distribution of the compound (Think anions and cations)(lost and gain in e-)
Oxidation rules
Elemental form of anything is 0 Monoatomic ions are the same as the charge Group 1 = +1 Group 2 = +2 H = +1 (-1 with metals) O = -2 (unless peroxide -1) F = -1 Sum of oxi # in nuetral compund is 0 Sum of oxi # in polyatomic ion is the same as its charge
What groups are certain for ions
Group 1 and 2
What always comes first in a acid
HYDROGEN
Name the common prefix/suffix in polyatomic ions
Hypo__ite= -2 Oxygen from -ate -ite= -1 Oxygen from -ate -ate= memorize Per__ate= +1 Oxygen from -ate
monatomic ions
Ions formed from a single atom
5) write the names of the following FeCl2 PbBr2 ZnCl2
Iron (II) chloride Lead (II) bromide Zinc Chloride
6) write the names of the following FeS FeN NiI PbO2
Iron (II) sulfide Iron (III) nitride Nickel (I) Iodide Lead (IV) Oxide
13) formula Potassium sulfate Iron (III) carbonate Cobalt (II) chromate Copper (I) sulfite
K2SO4 Fe2(CO3)3 CoCrO4 Cu2SO3
How do we find out whether a redox reaction has occured or not
Keep track of electron by assigning oxidation numbers to the atoms or ions involved in a Chemical reaction
Rules for molecular/covalent compounds Review
Metal no change Nonmetal add -ide and prefix
Rules from writing the formula/name for binary/tertiary ionic compounds Review
Metal no change Transition add roman numeral Nonmetal add -ide Question 9 and 10
Name all prefix 1-10
Mono 1 Di 2 Tri 3 Tetra 4 Penta 5 Hexa 6 Hepta 7 Octa 8 Nona 9 Deca 10
Rules to name/write the formula of tertiary ionic compounds
Name the metal (include roman numerals if transition metal) Name the polyatomic ion (be careful if there is no subscript) Question 7
Rules for writing name/formula of binary compounds with cation (not transition) and anion
No change to the cation Add -ide to the anion Question 1 and 2
How to name acids
Oxyacid ___ATE+H = ___(first part of polyatomic)__ic acid SulfATE+H Sulfuric acid ___ITE+H = ____(first part of polyatomic)__ous acid SulfITE+H Sulfurous acid Binaryacid: hydro___(halogen)___ic acid HCl Hydrochloric acid
Is this oxyacid or binaryacid? Why H2SO4 HCl
Oxyacid: includes hydrogen and polyatomic ion Binaryacid: includes hydrogen and halogen
Tertiary includes
Polyatomic 3+ elements in compound
Oxidation
Reduction reaction are reacations in which electron are lost and gained by atoms or ions in reactants
2) Name the binary ionic compounds indicated by the following formulas AgCl ZnO CaBr2 SrF2 BaO CaCl2
Silver (I) chloride Zinc oxide Calcium bromide Strontium fluoride Barium oxide Calcium chloride
10) write the name of the following Ag2O Ca(OH)2 KClO3 NH4OH Fe2(CrO4)3 KClO
Silver oxide Calcium hydroxide Potassium chlorate Ammonium hydroxide Iron (III) chromate Potassium hypochlorite
9) write the formula for the following Tin (IV) sulfate Sodium iodide Calcium chloride Potassium sulfide Lithium nitrate Copper (II) sulfate Sodium carbonate Calcium nitrite Potassium perchlorate
Sn(SO4)2 NaI CaCl2 K2S LiNO3 CuSO4 Na2CO3 Ca(NO2)2 KClO4
7) write the name of the following NaNO3 SrSO4 Cu(NO3)2 (NH4)2S H3OCl CuCO3 Fe2(CO3)3
Sodium Nitrate Strontium Sulfate Copper (II) Nitrate Ammonium Sulfide Hydronium Chloride Copper (II) Carbonate Iron (III) Carbonate
Rules for writing name/formula of binary compounds with cation (transition) and anion
Write the roman numeral charge for cation Add -ide to the anion Question 3 and 4
Rules for formula compounds
Write the symbols of each ion Write the charge of each ion Cris Cross the numbers of the charges (be careful with polyatomic) Rewrite the formula with subscripts Question 1 and 13
Which transition metal do you never need to write the roman numeral? Why
Zinc because it is understood to be 2+
1) Write the formulas for the binary ionic compounds formed between the following elements Zn and I Zn and S K and I Mg and Cl Na and S Al and S Al and N
ZnI2 ZnS KI MgCl2 Na2S Al2S3 AlN
Binary acids
acids that consist of two elements, usually hydrogen and one of the halogens— fluorine, chlorine, bromine, iodine
Oxyacids
acids that contain hydrogen, oxygen, and a third element (usually a nonmetal).
oxidation numbers/oxidation states
indicate the general distribution of electrons among the bonded atoms in a molecular compound or a polyatomic ion, are assigned to the atoms composing the compound or ion
Hydrocarbons
molecular compounds composed solely of carbon and hydrogen
nomenclature
naming system
oxyanions
polyatomic ions that contain oxygen
