Name: _____________________________________
Writing Chemical Formulas
Types of Chemical bonds.
Classify the following compounds as ionic (metal + nonmetal), covalent (nonmetal + nonmetal), or both (compound containing a polyatomic
ion).
1. CaCl2
6. NaF
11. MgO
16. NO2
2. CO2
7. Na2CO3
12. NH4Cl
17. AlPO4
3. H2O
8. CH4
13. HCl
18. FeCl3
4. BaSO4
9. SO3
14. KI
19. P2O5
5. K2O
10. LiBr
15. NaOH
20. N2O3
Oxidation Numbers
Write the oxidation numbers of the following ions by adding a superscript to the chemical symbols. (+, +2, +3, -, -2, -3, etc.)
21. Na
24. Sr
27. As
30. Mn
22. O
25. P
28. I
31. Cu
23. Ca
26. Ar
29. K
32. Zn
Writing Formulas (criss-cross method)
Write the formulas of the compounds produced from the listed ions.
Cl
Na
Ga
Li
Ca
Mg
Zn+2
Fe+3
Al
Co+2
Fe+
K
C
O
S
P
N
Writing Formulas (criss-cross method)
Write the formulas of the compounds produced from the listed ions.
Cl-
CO3-2
OH-
SO4-2
PO4-3
NO3-
Na+
NH4+
K+
Ca+2
Mg+2
Zn+2
Fe+3
Al+3
Co+3
Fe+2
H+
Naming Chemicals
If you are given the formula, write the name of the chemical. If you are given the name, write the formula. You may use the rules of naming
sheet.
Ionic:
1) KCl
2) MgCl2
3) Lithium Bromide
4) KI
5) Calcium Chloride
6) NaF
7) Potassium Oxide
8) Magnesium Oxide
Covalent
9) Carbon dioxide
10) CO
11) Sulfur dioxide
12) SO3
13) Dinitrogen pentoxide
14) P2O5
15) Carbon tetrachloride
16) OF2
Polyatomic Ions
17) Ammonia
18) Mg(NO3)2
19) Aluminum Phosphate
20) BaSO4
21) Na2CO3
22) Sodium Hydroxide
23) Be(NO3)2
24) (NH4)3PO4
25) Sodium Chlorate
Mixed – you first have to determine what type of
compound you have then use the correct rules to
answer the question.
26) Iron II Chloride
27) Al2(CO3)3
28) Diphosphorus monoxide
29) N3O4
30) NaBr
31) Na2S
32) AsCl3
33) Sodium Nitrate
34) Sulfur monochloride
35) Zinc III oxide