Balancing chemical equations

What is Balancing chemical equations?

If a chemical equation does not obey the law ofconservation of matter the equation is said to be

NOT BALANCED equation . If a chemical equation obeys the law ofconservation of mass the equation is said to beBALANCED equation .

The law of conservation of matter

The law of conservation of matter : the amount of matter present before and after a chemical change remains the same .

Reactants = Products

How to balance an equation? .

Problem:-

Fe + Cl2 = FeCl3

Answer

Historical background of ideas about conservation of matter :-Heraclits : He said that changing forms of water that ‘’ sea is liquefied and measured into the same proportion as it before it became Earth ‘’ . He meant that the amount of water doesn’t change .

Permenides: he said that ‘’ every thing is conserved, that nothing come from nothing .

Aristotal: There is four atoms ( fire , earth , water and air ) .

Nasiraddin : a body of matter can't disappear completely , it is only changes its form .

Democritus: the smallest unit is atoms and can't cut into smaller pieces .