Atomic Models and Electron Arrangement — Interactive Lesson (Ages 14–16)

From a plum pudding to a tiny nucleus with shells of electrons — see how the model of the atom changed. This 22-slide interactive lesson on electron arrangement takes pupils from first ideas to exam-style explanations, with 13 self-marking activities and nothing to prepare beforehand.

Teaching Atomic Models and Electron Arrangement in GCSE Chemistry

Pupils follow the development of the atomic model from Dalton and Thomson's plum pudding to Rutherford's nuclear model, Bohr's shells and Chadwick's neutron, and explain what each result of the alpha particle scattering experiment showed. They compare the size of an atom and its nucleus, write electron arrangements for the first 20 elements, link them to group and period, and calculate relative atomic mass from isotope abundances.

What Pupils Will Learn

• Describe how the model of the atom developed over time.
• Explain how the alpha particle scattering experiment led to the nuclear model.
• Describe the size of an atom and its nucleus.
• Write electron arrangements for the first 20 elements.
• Calculate relative atomic mass from isotope abundances.

What’s Included

• 22-slide interactive lesson
• 13 self-marking activities: multiple-choice questions, true-or-false checks, sorting tasks, drag-and-drop categorising 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), 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 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.