This deep dive covers Inside the Atom within Atomic Structure for GCSE Physics. Revise Atomic Structure in Atomic Structure for GCSE Physics with 16 exam-style questions and 25 flashcards. This topic appears less often, but it can still be a useful differentiator on mixed-topic papers. It is section 2 of 12 in this topic. Use this deep dive to connect the idea to the wider topic before moving on to questions and flashcards.
Topic position
Section 2 of 12
Practice
16 questions
Recall
25 flashcards
🏗️ Inside the Atom
An atom is made of three types of subatomic particles: protons, neutrons, and electrons. Protons and neutrons cluster together in a tiny, dense nucleus at the centre. Electrons orbit the nucleus in shells (energy levels) at relatively vast distances.
Think of the atom like a tiny solar system: the nucleus is the Sun, and electrons are planets orbiting far out. The "solar system" model isn't perfectly accurate, but it captures the key idea — almost all the mass is at the centre, and almost all the volume is empty space.
Quick Check: Where is almost all of an atom's mass concentrated?
In the nucleus, which contains protons and neutrons. Electrons have negligible mass.
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?
Describe the structure of an atom. Include the location and charge of the three main subatomic particles.
Quick Recall Flashcards
16 questions on Atomic Structure — practise free
Instant marking, adaptive difficulty, and 25 spaced repetition flashcards. Free until your GCSEs.
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