Chapter 5 Chemical Names and Formulas Introductory Skillsheet



First Semester Binary Formula Naming and Writing.

The simplest compounds, binary compounds, contain just two elements. Some examples include: Sodium chloride, NaCl; Lithium oxide, Li2O

In naming binary compounds, follow these rules: 1. Write the name of the metal element ( the positive charge) first. 2. To make the second word of the formula name change the ending of the non-metal element’s name to -ide. For example bromine changes to bromide and phosphorus changes to phosphide.

Metals have positive charges when combined with non-metals. The non-metals have negative charges when combined with metals.

Practicing the naming of Binary Compounds:

1. MgO____________________________

2. BaS_____________________________

3. K3P_____________________________

4. Na3N____________________________

5. Ba3P2 ___________________________

6. Ca3P2___________________________

7. RaSe____________________________

Some TRANSITION metals have more than one positive ionic charge. Look at the correct formulas below:

Cu2O---copper (I) oxide

CuO---copper (II) oxide

FeCl2---iron (II) chloride

FeCl3--- iron (III) chloride

Note that Roman numerals follow the names of some transiton metals ( positive elements). The numerals indicate the charge of the element in the compound.

Practicing the naming Binary compounds that contain transition metal ions. Be sure to write the roman numeral after the metal name!!

8. SnCl4 ____________________________

9. Mn2O3____________________________

10. PbS ____________________________

11. Bi2O5_____________________________

12. FeP_______________________________

13. Fe3P2_____________________________

Writing the formulas for Binary compounds.

To write the formulas of ionic compounds follow these steps. 1. Write out ions with charges. 2. The number next to the charge symbol of the positive ion will be the subscript on the negative ion. (vice versa).

For example: Ba+2 and N-3-------> Ba3N2 (called Barium nitride)

Note a correct ionic formula will have no charge symbols. All numbers will be subscripted. The subscripts will also be written in lowest terms which is known as a formula unit.

Practicing giving the name for the binary ionic compounds:

14. aluminum telluride ____________________

15. iron (III) chloride___________________

16.silver chloride______________________

Practicing giving the name or the correct formula for the binary ionic compounds:

17. CaH2_________________________

18. Al2O3___________________________

19. Mercury (II) oxide__________________

20. Na3As__________________________

21. iron(III) iodide _______________________

22. Fe2S3_____________________________

23. Cu2S________________________

24. Cr3N2_________________________

25. Mg3As2________________________

26. Li2O__________________________

27. potassium chloride___________________

28. Cr4C3 _________________

29. zinc sulfide_________________

30. PbO2__________________________

31. lead (IV) fluoride_____________________

|PRE-AP Chemistry Formulas and Charges of Ions |

|Metal ion charges and Transition Metals using Roman Numerals |

| | | | | | | | | | |

|1+ |2+ |3+ |4+ |5+ |

| | | | | | | | | | |

|Li+ |Lithium |Be2+ |Beryllium |Al3+ |Aluminum | | | | |

|Na+ |Sodium |Mg2+ |Magnesium |Ga3+ |Gallium (III) |Ge4+ |Germanium (IV) |Bi5+ |Bismuth (V) |

|K+ |Potassium |Ca2+ |Calcium | | |Sn4+ |Tin (IV) | | |

|Rb+ |Rubidium |Sr2+ |Strontium | | |Pb4+ |Lead (IV) | | |

|Cs+ |Cesium |Ba2+ |Barium | | | | | | |

|Fr+ |Francium |Ra2+ |Radium | | | | | | |

| | | | | | | | | | |

| | |Cd2+ |Cadmium |Bi3+ |Bismuth (III) | | | | |

|Cu+ |Copper (I) |Cr2+ |Chromium (II) |Cr3+ |Chromium (III) | | | | |

|H+ |Hydrogen |Co2+ |Cobalt (II) |Co3+ |Cobalt (III) | | | | |

| | |Cu2+ |Copper (II) |Fe3+ |Iron (III) | | | | |

|Ag+ |Silver |Fe2+ |Iron (II) |Mn3+ |Manganese (III) | | | | |

| | |Pb2+ |Lead (II) |Ni3+ |Nickel (III) | | | | |

| | |Mn2+ |Manganese (II) | | | | | | |

| | |Hg22+ |Mercury (I) | | | | | | |

| | |Hg2+ |Mercury (II) | | | | | | |

| | |Ni2+ |Nickel (II) | | | | | | |

| | |Sn2+ |Tin (II) | | | | | | |

| | |Zn2+ |Zinc | | | | | | |

| | | | | | | | | | |

| |

|NON METAL NAMES and Charges |

| | | | | | | |

|1- |2- |3- |4- | | |

|Group VII |Group VI |Group VA |Group IVA | | |

| | | | | | |

| | | | | | | | | | |

|F- |Fluoride |O2- |Oxide |N3- |Nitride |C4- |Carbide | | |

|Cl- |Chloride |S2- |Sulfide |P3- |Phosphide | | | | |

|Br- |Bromide |Se2- |Selenide |As3- |Arsenide | | | | |

|I- |Iodide |Te-2 |Telluride | | | | | | |

|At- |Astatide | | | | | | | | |

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