1.

Note down the number of atoms in the reactant side and the number of atoms in the product side in the table below. Total number of atoms in the reactant sideTotal number of atoms in the product side  Mg O Mg O ........ ....... ....... .........1. Is the number of atoms of each element equal on both sides?2. The number of which atom is not equal on both sides?3. How many product molecules are needed to equalize the number of oxygen atoms on both sides?4. How will you represent two molecules of magnesium oxide?5. Now, is the number of magnesium atoms equal on both sides?6. How many magnesium atoms are needed in the reactant side to equalize the number of magnesium atoms on both sides?7. Then how can you rewrite the above equation?8. Is the total number of atoms of each element in the molecules present in the reactant side and that in the product side equal in this equation?

Answer»
Total number of atoms in the reactant sideTotal number of atoms in the product side
  Mg O Mg O
 1 21 1

1.  No

2.  O

3.  2

4.  2 MgO

5.  No

6.  2

7.  2 Mg + O2 → 2MgO

8. Yes



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