Explain why you put subscripts in chemical formulas. Activator Explain why you put subscripts in chemical formulas.

Aqua Rules American Rules no Roman no Greek

Aqua Name Write element names and change ending of second element to –ide. Example: Na2O  Sodium oxide

Aqua Formulas Balance positive and negative charges, then add subscripts Example: Na1+ Na2O O2- Na1+ It take 2 Na1+ to balance 1 O2-

Red Rules Roman Rules Roman numerals are the positive oxidation number for the transition metals (“the valley varies”)

Red Name Write element names and change ending of second element to –ide. Use the roman grid to find the red oxidation number and write as Roman Numeral.

Red Formulas Get oxidation number for red element from Roman Numeral, balance charges, and write subscripts. Example: Iron (III) oxide Oxidation number for Iron (III) = 3+ O2- Fe3+ It takes 2 Fe3+ and 3 O2- to balance positive and negative charges  Fe2O3 O2- Fe3+ O2-

Green Rules Greek Rules Greek prefixes in name

Greek Prefixes One mono Two di Three tri Four tetra Five penta Six hexa Seven hepta Eight octa Nine nana Ten deca

Green Name Turn subscripts into Greek prefixes in front of element names (do not use mono- on the first element). Change ending of second element to –ide. Example: CO2  Carbon dioxide CO  Carbon monoxide

Green Formula Turn Greek prefixes into formula subscripts. Do not try to balance charges. Example: Carbon tetrachloride  CCl4

Ticket out the Door 1. NaCl 2. AlI3 3. NiO 4. Ni2O3 NaF Name the following on a sheet of paper: 1. NaCl 2. AlI3 3. NiO 4. Ni2O3 NaF Write the following equations: 1. Iron (II) chloride 2. Sodium chloride

Right or wrong? If the formula is incorrect, write the correct formula: LiF2 KBr MgCl AlO2

Naming Ionic Compound Bond between a metal and nonmetal Name the metal Name the nonmetal and change the ending to –ide.

Write the formulas and name the compounds Na+1 Cl-1 5. Mg+2 P-3 2. Ba+2 F-1 6. Ca+2 Cl-1 3. K+1 S-2 7. Cs+1 P-3 4. Al+3 I-1 8. Al+3 P-3

Write the formulas and Name the compounds K bonded with Cl 5. Sr bonded with P 2. Ba bonded with P 6. Cs bonded with Cl 3. Fr bonded with O 7. Na bonded with N 4. Al bonded with S 8. Al bonded with Cl

Ticket Out The Door Write formulas and name the following: Na bonded with P Ca bonded with N Cs bonded with Se Ba bonded with Br Li bonded with I

Name the Compounds (p.54) 6. ZnS 11. FeO 7. Ag2O 12. Fe2O3 9. NiO 13. CrS 10. Ni2O3 14. Cr2S3

Name the Compounds (p.54) 15. CuCl 19. MnBr2 16. CuCl2 20. MnBr4 17. PbO 18. PbO2

Ticket Out the Door Name the following: 1. NaCl 2. AlI3 3. NiO 4. Ni2O3 5. NaF

Write and name the following Ionic Compounds with “regular” metals NaCl 6. LiCl NaF 7. KCl Al2O3 8. CaS CaI2 9. BeF AlI3 10. K3N Sodium chloride Lithium chloride Sodium fluoride Potassium chloride Calcium sulfide Aluminum oxide Calcium iodide Beryllium fluoride Aluminum iodide Potassium nitride

Write and name the following Ionic Compounds with “transition” metals ZnS 6. MnO NiO 7. Mn2O3 Ni2O3 8. MnBr2 CrCl2 9. MnBr4 CrCl3 10. FeO Zinc (II) sulfide Manganese (II) oxide Nickel (II) oxide Manganese (III) oxide Manganese (II) bromide Nickel (III) oxide Chromium (II) chloride Manganese (IV) bromide Chromium (III) chloride Iron (II) oxide

Name the following TiBr3 6. Zn3P2 Cu3P 7. Cu2O CaSe 8. SnS2 AlAs 9. Pb3N2 NaBr 10. Cs2O Titanium (III) bromide Zinc (II) phosphide Copper (I) phosphide Copper (I) oxide Tin (IV) sulfide Calcium selenide Aluminum arsenide Lead (II) nitride Sodium bromide Cesium oxide

Write the following formulas Magnesium phosphide 6. Sodium fluoride Aluminum iodide 7. Barium chloride Lithium bromide 8. Sodium chloride Potassium sulfide 9. Calcium oxide Barium fluoride 10. Beryllium sulfide

Write the following formulas Silver (I) oxide 6. Chromium (II) chloride Copper (I) bromide 7. Chromium (III) chloride Copper (II) bromide 8. Zinc (II) sulfide Iron (II) oxide 9. Manganese (II) oxide Iron (III) oxide 10. Manganese (III) oxide CrCl2 Ag2O CrCl3 CuBr ZnS CuBr2 MnO FeO Mn2O3 Fe2O3

Write the following formulas Lithium oxide 6. Copper (II) chloride Magnesium oxide 7. Lead (II) oxide Potassium sulfide 8. Lead (IV) oxide Calcium sulfide 9. Manganese (II) bromide Aluminum chloride 10. Manganese (IV) bromide Li2O CuCl2 MgO PbO K2S PbO2 CaS MnBr2 AlCl3 MnBr4

Warm Up What is wrong with the following? Aluminum (III) trichloride Iron chloride Carbon (IV) oxide Monocarbon dioxide Magnesium monoxide

Write the names for . . . Na3N NO2 FeO Fe2O3 Sodium nitride Nitrogen dioxide Iron (II) oxide Iron (III) oxide

Write the names for . . . NO Nitrogen monoxide N2O Dinitrogen monoxide AlCl3 Al2O3 Nitrogen monoxide Dinitrogen monoxide Aluminum chloride Aluminum oxide

Write the formulas for . . . Dinitrogen pentaoxide Nitrogen dioxide Carbon tetrachloride Aluminum chloride N2O5 NO2 CCl4 AlCl3

Write the formulas for . . . Chromium (II) sulfide Chromium (III) sulfide Manganese (IV) bromide Aluminum oxide CrS Cr2S3 MnBr4 Al2O3