Topic 1.1: The mole concept and Avogadro's constant

1.1.1 Apply the mole concept to substances.

The mole concept applies to all kinds of particles: atoms, molecules, ions, electrons, formula units, and so on. The amount of substance is measured in moles (mol). The approximate Avogadro's constant (L), 6.02 x 10^23 mol^-1, should be known.

Easy way to remember, "1 mole x 1 molar mass = 1 g of mass"
"1 mole" is how many atom or molecule
"1 molar mass" is size of atom or molecule
"1 gram of mass" is mass in total.

Also, 1 mole = Avoagadro's constant.

1.1.2 Determine the number of particles and the amount of substance (in moles).

Convert between the number of particles and amount of substances.

Easy Conversions

1 mol = 6.02 x 10^23 particles

2 mol = 2 x 6.02 x 10 ^23 particles