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→Balancing Equations
: You may know the [[Chemical Formula|chemical formulae]] of the [[reactant]]s and [[product]]s but not know the number of each [[chemical]] needed. For that you must '''balance the equation'''.
: To '''balance and equation''' you need the same number of each type of [[atom]] on the left as you do on the right.
'''Lithium + Fluorine → Lithium Fluoride'''
: _Li + _F<sub>2</sub> → _LiF
: Reactants = Products
This equation is balanced: 2Li + F<sub>2</sub> → 2LiF
'''Aluminium + Chlorine → Aluminium Chloride'''
: _Al + _Cl<sub>2</sub> → _AlCl<sub>3</sub>
: Reactants = Products
This equation is now balanced: 2Al + 3Cl<sub>2</sub> → 2AlCl<sub>3</sub>
'''Aluminium + Oxygen → Aluminium Oxide'''
: _Al + _O<sub>2</sub> → _Al<sub>2</sub>O<sub>3</sub>
: Reactants = Products