Moles and Reacting Masses — Interactive Lesson (Ages 14–16)

Name: Moles and Reacting Masses — Interactive Lesson (Ages 14–16)
Brand: Skoolmaths
SKU: SKM-110142
Price: 3.69 GBP
Availability: InStock

☆☆☆☆☆ Add your review • Year 10–11 • 🎓 Interactive Lesson & Activities

Pupils calculate relative formula mass from relative atomic masses, meet the mole and the Avogadro constant, and use moles = mass ÷ Mr to convert between mass and moles.

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Interactive lessons that mark answers and read aloud
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Lesson at a glance

What pupils will learn

Calculate relative formula mass (Mr) from relative atomic masses.
Describe the mole and the Avogadro constant.
Use moles = mass ÷ Mr to convert between mass and moles.
Use balanced equations to calculate reacting masses.
Explain the idea of a limiting reactant.

Curriculum

UK: Year 10–11 Science, National Curriculum (England)
Topic area: Atoms, Bonding and Moles
US equivalent: Grades 9–10 (year level only; not mapped to US standards)

What the lesson covers

Relative Formula Mass (Mr)
The Mole
Reacting Masses
Limiting Reactants

How it is interactive

7 multiple-choice questions
2 fill-in-the-blank questions
2 true or false questions
1 sorting and ordering task
1 sentence-writing task
1 reveal card

Feedback and what you get

Questions are marked automatically as pupils answer: a sound and a character reaction show straight away whether they are right, and correct answers earn points, with a results screen at the end. Sentence-writing tasks are for pupils' own answers and are not marked automatically.

A 21-slide interactive lesson that runs in any web browser on a computer, tablet or interactive whiteboard. Members open it online from their year group page. Buying it on its own gives you a .zip download to unzip and open.

Free preview: try the first slides before you decide. Included in every Skoolmaths plan.

How do chemists know exactly how much to use? They count atoms by weighing them. This 21-slide interactive lesson on reacting masses takes pupils from first ideas to exam-style explanations, with 13 self-marking activities and nothing to prepare beforehand.

Teaching Moles and Reacting Masses in GCSE Chemistry

Pupils calculate relative formula mass from relative atomic masses, meet the mole and the Avogadro constant, and use moles = mass ÷ Mr to convert between mass and moles. Step-by-step worked examples, including the thermal decomposition of limestone in cement works, show how to use balanced equations to calculate reacting masses, before pupils identify limiting reactants and apply conservation of mass.

What Pupils Will Learn

Calculate relative formula mass (Mr) from relative atomic masses.
Describe the mole and the Avogadro constant.
Use moles = mass ÷ Mr to convert between mass and moles.
Use balanced equations to calculate reacting masses.
Explain the idea of a limiting reactant.

What’s Included

21-slide interactive lesson
13 self-marking activities: multiple-choice questions, true-or-false checks, sorting tasks and fill-in-the-gap questions
Step-by-step teaching cards that reveal one point at a time
A written explanation task with a model answer for self-assessment

Why Teachers Love It

No prep — open it on an interactive whiteboard, laptop or tablet
Instant feedback explains every answer, right or wrong
Everyday examples make chemistry feel real
Works for whole-class teaching, independent study or revision

Curriculum Alignment

Supports UK GCSE Chemistry and Combined Science (AQA, Edexcel and OCR) and the Nigerian Senior Secondary Chemistry curriculum (SS1–SS2), including WAEC and NECO exam preparation.

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FAQ

What year groups is this for? Years 10–11 (ages 14–16), and SS1–SS2 in Nigeria.

Is it self-marking? Yes — all 13 activities give instant feedback.

Do pupils need to log in? No. The lesson runs in any modern web browser.

Can I use it for revision? Yes. Pupils can replay it as often as they like, and the results screen shows which questions to review before a test.

Year Groups	Year 10–11
Resource Type	🎓 Interactive Lesson & Activities
Format	Digital Only
Curriculum	England & Wales — KS4 (Years 10–11)
Added	23 October 2026