1.2—The mole (mol) is the unit for the amount of a substance

Know that the mole (mol) is the unit for the amount of a substance and be able to perform calculations using the Avogadro constant L (6.02 × 10²³ mol⁻¹).

Use —the mole (mol) is the unit for the amount of a substance to connect the rule to the data and decision in the question.

This matters because —the mole (mol) is the unit for the amount of a substance determines what can be inferred or chosen; begin with the stated conditions and keep the conclusion tied to the evidence.

Example: apply —the mole (mol) is the unit for the amount of a substance to one small, clearly defined case, show the key step or comparison, and explain the result in words.

Boundary: —The mole (mol) is the unit for the amount of a substance is not a universal recommendation. Check the syllabus scope, assumptions, units and the limits of the evidence before generalising.