AQA A Level lesson on the limiting reactant from two masses and from two solutions, and the product formed. With a demo. Slides, sheets, answers.

Lesson 10 of a 23-lesson sequence on amount of substance. Pupils compare amounts against the equation’s ratio to find the limiting reactant, first from two masses and then from two solutions, and calculate the product from the limiting one only.

Two teaching cycles, each with a worked example, a gap-fill, a hinge question, a completion problem, whiteboards and a timed independent task.

What’s included: a teacher PowerPoint with answers revealed on click and full speaker notes (timings, what to look for, what each wrong answer means); a pupil PowerPoint with the answers removed, ready to print; a worksheet, a support sheet, extra practice and full worked answers as editable Word documents. Includes a risk assessment for the demonstration or practical.

Specification: AQA AS and A Level Chemistry 7404/7405, 3.1.2 Amount of substance.