GCSE Chemistry
Atomic Structure & Periodic Table
Atomic Structure & Periodic Table is a core strand in Chemistry. Work through the topics below in any order, or follow your course — each guide includes explanations, common mistakes and exam-style practice.
Topic guides
Atoms, Elements & Compounds
Atoms are the fundamental building blocks of all matter.
Open guideMixtures & Separation Techniques
Mixtures consist of two or more substances that are not chemically combined.
Open guideDevelopment of the Atomic Model
The model of the atom has evolved over time.
Open guideSubatomic Particles
Atomic Structure questions usually become easier once you stop seeing protons, neutrons, electrons, atoms, ions, and isotopes as six separate facts.
Open guideElectronic Structure & Periodic Table
The electronic structure of an atom describes the arrangement of its electrons in energy levels or shells.
Open guideGroups & Periods
The periodic table is organized into vertical columns called groups and horizontal rows called periods.
Open guideMetals, Non-Metals & Noble Gases
Elements can be classified as metals, non-metals, or metalloids based on their properties.
Open guide
Revision strategy
Students often slip on the details explained in our guides — read the “common mistakes” section in each topic.
- Alternate between reading a guide and doing timed questions — don’t only re-read notes.
- Return to this hub anytime; new guides appear automatically as we publish them.