Discussion 6-1 Chemical Names & Formulas CHEMISTRY I, Discusstion 6-1 Name___________________________ Discussion 6-1 Chemical Names & Formulas 1. How are ionic compounds named? 2. How is the chemical formula written for an ionic compound? 3. Why are molecular compounds named differently than ionic compounds?

Think About It!!! The following chemical names are wrong. Correct them. CaCl2 calcium dichloride Na2CO3 sodium carbon oxide CCl4 tetracarbon chloride The following chemical formulas are wrong. Correct them. aluminum oxide Al3O2 sodium nitrate Na3N sulfur trioxide S3O

1. How are ionic compounds named? General Rule: Variation—Transition Metal Variation—Polyatomic Ion (instead of 1 nonmetal)

Ionic Compound Naming Examples: 1) CaO 2) K3P 3) FeCl3 4) PbO 5) Li2CO3 6) Ba(NO2)2

2. How is the chemical formula written for an ionic compound?

Ionic Compound Formula Examples: 7) lithium oxide 8) magnesium bromide 9) chromium (III) oxide 10) copper (II) sulfide 11) sodium sulfate 12) magnesium phosphate

3. Why are molecular compounds named differently than ionic compounds?

Prefixes for Molecular Compounds Mono Di Tri Tetra Penta Hexa Hepta Octa Nona Deca

Molecular Compound Examples: 13) dinitrogen trioxide 14) phosphorus pentafluoride 15) tetrasulfur diiodide 16) Si2Cl6 17) NO2 18) P2O10

More Practice: Write the correct chemical formula. 19) sodium iodide 20) potassium carbonate 21) iron (III) oxide 22) copper (II) nitrate 23) barium chloride 24) aluminum hydroxide 25) phosphorus trichloride 26) carbon tetrabromide

More Practice: Write the correct chemical name. 27) S2Cl4 28) N2O5 29) KNO3 30) Na2SO4 31) Ca(OH)2 32) CuCl2 33) Fe2O3 34) Al2O3

More Practice: The Answers NaI 27. disulfur tetrachloride K2CO3 28. dinitrogen pentoxide 21. Fe2O3 29. potassium nitrate 22. Cu(NO3)2 30. sodium sulfate 23. BaCl2 31. calcium hydroxide 24. Al(OH)3 32. copper (II) chloride 25. PCl3 33. iron (III) oxide 26. CBr4 34. aluminum oxide