the mole concept

1. A mole contains the same number of particles (atoms, molecules, ions). It is a specific number of chemical units.
2. A mole is a quantity of substance that contains Avogadro’s number of units or particles, which is equal to 6.02 x 1023.
3. Molar Mass (MM) is the mass in gram of one mole of a substance.
4. For elements, it is numerically equal to the atomic mass, and for compounds, it is numerically equal to the molecular or formula mass.
5. The amount of substance can be expressed in three ways:
   Mass
   Moles
   Number of particles