This memory aid covers Memory Aids within Atomic Structure for GCSE Chemistry. Revise Atomic Structure in Atomic Structure for GCSE Chemistry with 28 exam-style questions and 22 flashcards. This topic appears regularly enough that it should still be part of a steady revision cycle. It is section 11 of 14 in this topic. Use it for quick recall, then test yourself straight afterwards so the memory aid becomes usable in an answer.
Topic position
Section 11 of 14
Practice
28 questions
Recall
22 flashcards
🧠 Memory Aids
PEN = Protons, Electrons, Neutrons — the three subatomic particles.
For charges: "ProPlus" = Protons are Positive. Electrons are the opposite (negative). Neutrons are Neutral.
For isotopes: "Same Pro, Different Neu" — Same number of Protons, Different number of Neutrons.
Atomic model order: "Thomson Tasted Rutherford's Brilliant Cake" (Thomson → Thomson's plum pudding → Rutherford → Bohr → Chadwick).
Keep building this topic
Read this section alongside the surrounding pages in Atomic Structure. That gives you the full topic sequence instead of a single isolated revision point.
Practice Questions for Atomic Structure
What does the atomic number of an element tell you?
Explain what is meant by the relative atomic mass of an element and how it is calculated from isotopic data. [3 marks]
Quick Recall Flashcards
28 questions on Atomic Structure — practise free
Instant marking, adaptive difficulty, and 22 spaced repetition flashcards. Free until your GCSEs.
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