Short notes of Chemistry Form4 Chapter3- Formulae and Equations

CHAPTER 3 : CHEMICAL FORMULAE AND EQUATIONS

The number 6.02 x 10²³ is called Avogadro Constant (N_A)

Number Of Particles ( Atom, Molecule, Ion ) = Number Of Mol x N_A

Number Of Mol = Number Of Particles ÷ N_A

Mass = Number Of Mol x Molar Mass

Number Of Mol = Mass ÷ Molar Mass

Volume = Number Of Mol x Molar Volume

Number Of Mol = Volume ÷ Molar Volume

Substances on the LEFT-HAND-SIDE = Reactant

Substances on the RIGHT-HAND-SIDE = Product

** Numerical Problems Involving Chemical Equations

            First Step : Find the number of mol

            Second Step : Form The Equation

            Third Step : Find the volume or mass

                                 FINISH!