In two or more sentences explain how to balance the chemical equation and classify its reaction type

Balancing is making the number of atoms of each element same on both the sides  (reactant and product side).

To find the number of atoms of each element we multiply coefficient × subscript  

For example   contains  

5 × 1 = 5 ,Sr atoms and

5 × 2 = 10, Cl atoms  

If there is a bracket in the chemical formula  

For example we multiply coefficient × subscript × number outside the bracket.......... to find the number of atoms  (Please note: 3 is the coefficient, and if there is no number given then 1 will be the coefficient )

So 3 × 3 = 9, Sr atoms  

3 × 1 × 2 = 6, P atoms  

3 × 4 × 2 = 24, O atoms are present.

Let us balance the equation  

 (Unbalanced)

Reactant Side       # of atoms of each element      Product Side

1                                             Fe                                          1

5                                            C                                           10

5                                           H                                           10

We see here C and H are not balanced on the reactant side so we multiply by 2 in order to get 10 that is, 2 times 5 =10 so now we have

Reactant Side       # of atoms of each element      Product Side

1                                              Fe                                           1

10                                            C                                            10

10                                            H                                            10

The Equation is Balanced as there are same number of atoms of each element on both the sides.

Balanced!!!

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