Chemistry(Atoms and molecules)

                              Mole concept

Important thing is first you know about 

1. Gram Atomic Mass
2. Gram Molecular Mass

Main thing is that you should learn Atomic masses Approx from 1 to 20.

The image i given for learn Atomic masses.

• Gram atomic masses- The amount of a substance whose mass in grams is numerically equal to its  atomic mass, is called gram atomic mass of that substance.

For Example-Atomic mass of oxygen, O = 16u

      so,  Gram atomic mass of oxygen , O = 16g

• Gram molecular mass- The amount of a substance whose mass in grams is numerically equal to its  molecular mass, is called gram molecular mass of that substance.

For Example-Molecular mass of oxygen, O = 32u

      so,  Gram Molecular mass of oxygen , O = 32g

So understand all above topic then you will learn mole concept.

Mole-  It is a link between the mass of atoms (or molecules) and the number of  atoms(or Molecules).

A group of 6.022*10^{23 Particles(atoms,molecules or ions) of a substance is called a mole of that substance.}

^{This number is equal to}   6.022*10^{23 , which represents a mole, is known as Avogadro number.}

PROMBLES BASED ON MOLES OF ATOMS

• The first relation is: 

1 mole of atoms =Gram atomic mass

• The second relation is:

1 mole of atoms = 6.022*10^{23 atoms}

• The third relation is:

Gram atomic mass = 6.022*10^{23 atoms}

• The main thing is that 

1 mole of atoms =Gram atomic mass= 6.022*10^{23 atoms}

So if you understand my topic comment me or not ask in comment.

                  Thank you