Balancing Equation

Today, we have went into a whole new chapter that is talking about balancing equations.
I can clearly remember I have seen these kind of equation when I was in Grade 10.

Well, the sole aim of this chapter is to teach you when two or more atoms or compounds react together which is called the reactant and form a new set of compounds on the other side of the equation called the product.

NOTE : the number of atoms of each kind on the reactant side=those on the product side.
              e.g. Ca + Cl2 ---> CaCl2

Now it is your turn to balance the equation by yourself!
Have fun!