Formula Assignment #4

Compound Names and Formulas

Compounds with Polyatomic Ions

 

A.  Write correct formula for these compounds.  They all contain polyatomic ions.

 

1.ammonium chloride  ________________                 11.  gold (III) hydroxide  ________________

 

2.  sodium chlorate __________________                  12.  sodium carbonate  ________________

 

3.  sodium sulphate  _________________                  13.  calcium hydrogen carbonate  ____________

 

4. potassium sulphite  ________________                 14.  ammonium nitrate  __________________

 

5.  calcium phosphate  _______________                  15.  ammonium carbonate  ________________

 

6.  calcium hydroxide  ________________                 16.  ammonium sulphate  _________________

 

7.  iron (III) hydroxide  ________________                  17.  lithium phosphate  __________________

 

8.  copper (II)  sulphate _______________                  18.  iron (III) sulphate  ___________________

 

9.  sodium phosphite  ________________                  19.  potassium hydroxide  _______________

 

10.  lithium chlorate  _________________                  20. ammonium hydroxide  _______________

 

B.  Name the following compounds which contain polyatomic ions correctly.

 

1. CaCO₃  _________________________                   11.  Zn(OH)2  _______________________

 

2.  NaHCO₃  _______________________                   12.  Ca(OH)2  _______________________

 

3. NH₄OH _________________________                   13.  Cr(OH)3  _______________________

 

4.  H₂SO₄  _________________________                   14.  Ca(ClO₃)₂  _______________________

 

5.  NaNO₃  __________________________                15.  Pb₃(PO₄)₂  _______________________

 

6.  Fe₂(CO₃)₃  _______________________                  16.  BaCO₃ _________________________

 

7.  Al₂(SO₄)₃  _______________________                  17.  Be(OH)₂  _______________________

 

8.  HOH ___________________________                  18.  Li₃PO₄  _________________________

 

9.  Ca(NO₃)₂  _______________________                  19.  Fe₂(CO₃)₃   _______________________

 

10.  Li₂CO_{3  _________________________}                   20.  H₃PO_{4  _________________________}