JSS 1: Chemical formula (II)

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Chemical formula: This is the formula that shows the elements in a particular chemical substance and the number of each atom present
Types of Chemical Formula
There are three basic types of chemical formula: 
1. Empirical formula 
2. Molecular formula 
3. Structural formula 

1. Empirical formula: This is the chemical formula that gives the simplest whole number ratio of atoms present in a compound.

2. Molecular formula: This is the chemical formula that gives the total number of atoms of each element in each molecule of a compound.
3. Structural formula: This is the chemical formula that shows the location of chemical bonds between the atoms of a molecule.
     The structural formula of methane

The chemical formula of some compounds:
1. Sodium hydroxide: NaOH 
2. Potassium hydroxide: KOH 
3. Calcium hydroxide: Ca(OH)₂
4. Sodium chloride(Table salt): NaCl 
5. Glucose: C6H12O6
6. Calcium oxide: CaO
7. Hydrochloric acid: HCl 
8. Iron (II) oxide: FeO
9. Iron (III) oxide: Fe₂O₃
10. Ammonium chloride: NH₄Cl
11. Ammonia: NH₃
12. Ammonium: NH₄

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