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Chemical Formulae

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Chemistry Practice: Writing Chemical Formulas

Write a chemical formula for each substance. 1. NaCl______________ sodium chloride
2. N2O5______________ dinitrogen pentoxide
3. O2 ________________ oxygen
4. K2SO4 ____________ potassium sulfate
5. H2SO3_____________ sulfurous acid
6. AgC2H3O2 _________ silver acetate
7. Cr(NO3)3___________ chromium(III) nitrate
8. SO3_______________ sulfur trioxide
9. (NH4)2CO3___________ ammonium carbonate
10. Ca(OH)2___________ calcium hydroxide
11. Li2S ______________ lithium sulfide
12. H3PO3 ____________ phosphorous acid
13. N2O______________ dinitrogen monoxide
14. Fe2O3_____________ Iron (III) oxide
15. Pb(ClO3)2__________ lead(II) chlorate
16. (NH4)3PO4_________ ammonium phosphate
17. ZnCl2_____________ zinc chloride
18. Ca3(PO4)2_________ calcium phosphate
19. OF2______________ oxygen difluoride
20. NaNO2___________ sodium nitrite
21. Fe2(SO4)3_________ iron(III) sulfate
22. HBr______________ hydrobromic acid
23. Cr2O3____________ chromium(III) oxide
24. N2O4 ____________ dinitrogen tetroxide
25. NH4NO3__________ ammonium nitrate

Name each of the following substances:
26. Gold (III) Bromide____ AuBr3
27. Carbon Monoxide____ CO
28. Potassium Carbonate_ K2CO3
29. Chlorous Acid _____ HClO2
30. Cesium Chloride_____ CsCl
31. Nickel (II) permanganate___ Ni(MnO4)2
32. Aluminum Sulfate______ Al2(SO4)3
33. Carbonic Acid_________ H2CO3
34. Barium Acetate_______ Ba(C2H3O2)2
35. Manganese (III) Hydroxide____ Mn(OH)3
36. Potassium dihydrogen phosphate KH2PO4
37. Hydrosulfuric Acid___ H2S
38. Aluminum Bromate_________ Al(BrO3)3
39. Calcium Nitrate_________ Ca(NO3)2
40. Sulfur trioxide_________________ SO3
41. Potassium Cyanide__________ KCN
42. Lead (II) Nitrate______________ Pb(NO3)2
43. Dinitrogen trioxide _______________ N2O3
44. Cobalt (III) Chloride_______________ CoCl3
45. Sulfur hexafluoride________________ SF6
46. Calcium Nitride____________ Ca3N2
47. Copper (I) iodide________________ CuI
48. Silicon dioxide________________ SiO2
49. Tin (IV) Acetate________________ Sn(C2H3O2)4
50. Carbon tetraiodide_______________ CI4

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