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Chemical Names & Formulas

Learn about chemical names, formulas, and compounds, including ionic compounds, monoatomic ions, binary compounds, polyatomic ions, and molecular compounds. Understand how to name and write chemical formulas.

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Chemical Names & Formulas

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  1. Chemical Names & Formulas

  2. Chemical Formula • Indicates the relative number of atoms of each kind in a chemical compound.

  3. Ionic compound • Consists of a lattice of positive & negative ions. • Formula represents one formula unit, the simplest ratio of the compound’s cations & anions. • Formula must be neutral.

  4. Monoatomic Ions • Ions formed from a single atom. • Metals lose electrons to form positive ions. • Non-metals gain electrons to form negative ions.

  5. Name • Na1+ • Sodium ion

  6. Name • Ca2+ • Calcium ion

  7. Formula • Magnesium ion • Mg2+

  8. Name • F1- • Fluoride ion

  9. Write the formula • Bromide ion • Br1-

  10. Name • O2- • oxide ion

  11. Name • N3- • nitride ion

  12. Name • Fe2+ • iron (II) ion

  13. Name • Fe3+ • iron (III) ion

  14. Name • Co3+ • cobalt (III) ion

  15. Name • Pb2+ • Lead (II) ion

  16. Name • Pb4+ • Lead (IV) ion

  17. Name • Zn2+ • Zinc ion

  18. Name • Ag1+ • Silver ion

  19. Name • Cd2+ • Cadmium ion

  20. Write the formula • Binary Compounds • Compounds composed of only two different elements • The total numbers of positive & negative charges must be equal.

  21. http://www.bbc.co.uk/schools/gcsebitesize/chemistry/classifyingmaterials/ionic_bondingrev5.shtmlhttp://www.bbc.co.uk/schools/gcsebitesize/chemistry/classifyingmaterials/ionic_bondingrev5.shtml

  22. Write the formula • Sodium chloride • NaCl

  23. Write the formula • Magnesium chloride • MgCl2

  24. Name • CaCl2 • Calcium chloride

  25. Name • ZnO • Zinc oxide

  26. Name or Write the formula • Magnesium bromide • MgBr2

  27. Name or Write the formula • Aluminum oxide • Al2O3

  28. Name or Write the formula • Sodium iodide • NaI

  29. Write the formula • Silver oxide • Ag2O

  30. Polyatomic Ions • Groups of atoms that are covalently bonded together but they carry a charge.

  31. Name or Write the formula • CO32- • carbonate

  32. Name or Write the formula • SO32- • sulfite

  33. Write the formula • Dimercury ion • Hg22+

  34. Name or Write the formula • NH4+ • Ammonium ion

  35. Name or Write the formula • PO43- • phosphate

  36. Name or Write the formula • O22- • peroxide

  37. Name or Write the formula • CH3COO1- • acetate

  38. Name or Write the formula • CN1- • cyanide

  39. Name or Write the formula • perchlorate • ClO41-

  40. Name or Write the formula • nitrate • NO31-

  41. Name or Write the formula • permanganate • MnO41-

  42. Name or Write the formula • HCO31- • Bicarbonate or hydrogen carbonate

  43. Ionic Compounds with Polyatomic Ions • Named in the same manner as binary ionic compounds

  44. Name or Write the formula • Sodium acetate • NaCH3COO

  45. Name or Write the formula • Potassium hypochlorite • KClO

  46. Name or Write the formula • Iron (III) nitrate • Fe(NO3)3

  47. Name or Write the formula • Copper (II) sulfate • CuSO4

  48. Name or Write the formula • Sodium hydroxide • NaOH

  49. Name or Write the formula • Potassium perchlorate • KClO4

  50. Molecular Compound • The chemical formula reveals the numbers of atoms of each element contained in a single molecule of the compound. • Lewis Structures drawn to show how atoms share electrons. • CH4 • NH3 • H2O

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