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