10-item Test On Formula Writing

10 Questions | By Mcabana | Updated: Mar 22, 2022 | Attempts: 2196

Questions

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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.

Questions and Answers

1.

Carbon tetrachloride
- A.
  
  CaCl4
- B.
  
  CCl4
- C.
  
  Ca4Cl
- D.
  
  C4Cl
2.

Copper (II) oxide
- A.
  
  CuO
- B.
  
  Cu2O
- C.
  
  CuO2
- D.
  
  Cu2O2
3.

Sodium hypochlorite
- 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