1.1 Formulae of Ionic Compounds
   1.1.1 Ratio of ions in ionic compounds
1.1.1.1  Example(1) Cross Method
 

(A) Calcium Chloride
(B) Aluminium Sulphate

   
1.1.1.2  Example(2) Jig-saw Method
  (A) Calcium Chloride
(B) Aluminium Sulphate
   
1.1.1.3  Questions on Cross Method
  Level 1 Questions
  Level 2 Questions
   
1.1.1.4  Questions on Jig-saw Method
  Level 1 Questions
  Level 2 Questions
 
   1.1.2 Number of ions from an ionic compound
 
1.1.2.1  Questions on Total Number of Ions
  Questions
   

1.2 Formulae of Covalent Compounds
  1.2.1 Ratio of atoms in covalent compounds
 
1.2.1.1  Example(1) Cross Method
  (A) Carbon dioxide
(B) Hydrogen sulphide
   
1.2.1.2  Example(2) Jig-saw Method
  (A) Carbon dioxide
(B) Hydrogen sulphide
   
1.2.1.3  Questions
  Level 1 Questions
  Level 2 Questions
 

1.3 Prediction of Structure from Names or Formulae of Compounds
 
1.3.1 Example
   
1.3.2 Questions
  Questions