Nomenclature Worksheet

Nomenclature Worksheet Part A: Identify each as an acid or base (or ionic or covalent) AND Write a chemical formula for each name 1. Ammonium phosphate 2. Lithium hydroxide 3. Hydrobromic acid 4. Copper(I) bromide 5. Carbon tetrafluoride 6. Sulfuric acid 7. Cobalt (II) chloride 8. Acetic acid 9. Diphosphorus pentaoxide 10. Hydroselenic acid 11. Carbonic acid 12. Zinc hydroxide 13. Silver sulfide 14. Hydrocyanic acid 15. Lithium chloride 16. Chlorine dioxide 17. Hydrochloric acid 18. Calcium hydroxide 19. Hypochlorous acid 20. Chloric acid Part B: Identify each as an acid or a base (or ionic or covalent) AND Name each chemical formula 1. BaO 2. KMnO4 3. H3PO4 4. ZnSO4 5. FeCl2 6. NH4I 7. Fe(OH)3 8. Mg(OH)2 9. HI 10. Zn(CN)2 11. AlCl3 12. Cr2O3 13. KBr 14. BrCl5 15. Ni3P2 16. CrCl6 17. N2O4 18. HNO3 19. Na2Cr2O7 Answers: PART A: Remember to charge balance all acids, bases and ionic compounds 1. Ionic - (NH4)3PO4 2. Base (hydroxides are always bases) - LiOH 3. Acid – HBr (anion is bromIDE since name starts with hydro) 4. Ionic – CuBr 5. Covalent – CF4 6. Acid – H2SO4 (anion is sulfATE since name does not start with hydro and ends with –ic acid) 7. Ionic – CoCl2 8. Acid – HCH3COO or HCH3CO2 (anion is acetATE since name does not start with hydro and ends with –ic acid; most common way to write this is CH3COOH, because the H+ attaches to the O in the acetate ion) 9. Covalent – P2O5 10. Acid – H2Se (anion is selenIDE since the name starts with hydro) 11. Acid – H2CO3 (anion is carbonATE since name does not start with hydro and ends with –ic acid) 12. Base (hydroxides are always bases) – Zn(OH)2 – remember Zn ions are always 2+ 13. Ionic – Ag2S (recall silver ions are always 1+) 14. Acid – HCN (anion is cyanIDE since the name starts with hydro; charge balance acids) 15. Ionic – LiCl 16. Covalent – ClO2 17. Acid – HCl (anion is chlorIDE since the name starts with hydro) 18. Base (hydroxides are always bases) – Ca(OH)2 19. Acid – HOCl (anion is hypochlorITE since the ending is -ous acid the anion ends in -ite) 20. Acid - HClO3 (anion is chlorATE since name does not start with hydro and ends with –ic acid) Answers: PART B: Remember to charge balance all acids, bases and ionic compounds 1. Ionic – barium oxide 2. Ionic – potassium premanganate 3. Acid – phosphoric acid (anion is phosphATE; named as (anion name minus –ate) -ic acid) 4. Ionic – zinc sulfate (no roman numeral needed since Zn ions are always 2+) 5. Ionic – iron (II) chloride (roman numeral indicates the CHARGE on Fe, which must be 2+ to balance 2Cl-) 6. Ionic – ammonium iodide 7. Base – Iron (III) hydroxide (roman numeral indicates CHARGE on Fe, which must be 3+ to balance 3OH-) 8. Base – magnesium hydroxide 9. Acid – hydroiodic acid (acid is iodIDE; named as hydro (anion name minus -ide)- ic acid) 10. Ionic – zinc cyanide (no roman numeral needed since Zn ions are always 2+) 11. Ionic – aluminum chloride 12. Ionic – chromium (III) oxide (roman numeral is CHARGE on each Cr, which must be 3+ to balance 3O-2) 13. Ionic – potassium bromide 14. Covalent – bromine pentachloride 15. Ionic – Nickel (II) phosphide (roman numeral is CHARGE on each Ni, which must be 2+ to balance 2P-3) 16. Ionic – chromium (VI) chloride (roman numeral is CHARGE on Cr, which must be 6+ to balance 6Cl-1) 17. Covalent – dinitrogen tetraoxide 18. Acid – Nitric acid (anion is nitrATE; named as (anion name minus –ate) -ic acid) 19. Ionic – sodium dichromate