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POWERPOINT PRESENTATION
WELCOME
TOPIC
CHEMICAL FORMULA
Chemical formula is an abbreveation presenting the molecule of an element
or a compound
The number and kind of the atoms of elements can be under stood from the Chemical formula
The symbol and number of atoms of each element will be indicated in the Chemical formula
Water- H2O
Hydrogen Chloride – HClAmmonia – NH3
If the valency number can be simplified into small units, they are indicated in the chemical formula in
the simplified form
Magnesium Oxide- MgOvalency of Magnesium- 2
Valency of Oxygen – 2 Mg2O2
Mg2/2 O2/2
= MgO
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