AQA GCSE Physics · Topic 4
48 cards on Atomic Structure, every one written against a numbered point in section 4.4 of the AQA Physics spec. Here’s what the topic covers, and 4 cards to try.
Answer each one in your head, then check. In the app, how well you knew it decides when you see it again.
4.4.1.1–4.4.1.2 · Atoms & Isotopes
A tiny positively charged nucleus of protons and neutrons, surrounded by negatively charged electrons. Radius about 1 × 10⁻¹⁰ m; the nucleus is less than 1/10 000 of that.
4.4.1.3 · Developing the Atomic Model
The plum pudding model: a ball of positive charge with negative electrons embedded in it.
4.4.2.2 · Nuclear Equations
Mass number decreases by 4 and atomic number decreases by 2.
4.4.2.3 · Half-Life
The time it takes for the number of nuclei of an isotope in a sample to halve, or for the count rate (activity) to fall to half its initial level.
Every part of section 4.4 of the AQA spec, and how many cards cover it. Higher-only cards are hidden for Foundation students. Cards only on the separate Physics GCSE are hidden for Combined Science.
Launching November 2026
revolve. shows you each Atomic Structure card just before you’d forget it, so ten minutes a day is enough. It opens to students soon: join the waitlist and we’ll email you once, when it does.