10-Item Test On Formula Writing
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This 10-item test will measure how well you understood the rules in writing down the correct chemical formulas of compounds. You have 5 minutes to complete the test. Identify the correct chemical formula of the given compound. Tick the letter that corresponds to your answer. *Numbers in the chemical formulas are supposed to be treated as subscripts.
- 1.Carbon tetrachloride
- A.
CaCl4
- B.
CCl4
- C.
Ca4Cl
- D.
C4Cl
- 2.Copper (II) oxide
- A.
CuO
- B.
Cu2O
- C.
CuO2
- D.
Cu2O2
- 3.
- A.
NaClO4
- B.
NaClO3
- C.
NaClO2
- D.
NaClO
- 4.Aluminum hydroxide
- A.
Al(OH)3
- B.
Al(OH)2
- C.
AlOH
- D.
AlO
- 5.Copper (II) sulfate pentahydrate
- A.
Cu2SO4 . 5H2O
- B.
CuSO . 5H2O
- C.
CuSO4 . 5H2O
- D.
Cu2(SO4)2 .5H2O
- 6.Potassium permanganate
- A.
KMnO5
- B.
KMnO4
- C.
KMnO3
- D.
KMnO2
- 7.Carbon dioxide
- A.
C2O
- B.
CO3
- C.
CO2
- D.
CO
- 8.Hydrochloric acid
- A.
HClO4
- B.
HClO
- C.
HClO3
- D.
HCl
- 9.Hyposulfurous acid
- A.
H2SO4
- B.
H2SO5
- C.
H2SO3
- D.
H2SO2
- 10.Ammonium acetate
- A.
NH4C2H3O2
- B.
NH4(C2H3O2)2
- C.
(NH4)2C2H3O2
- D.
(NH4)2(C2H3O2)2
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