Atoms and Atomic Structure – Complete Unit for Edexcel GCSE Chemistry

A fully resourced, plug-and-play Atoms unit designed for the Pearson Edexcel GCSE Chemistry (9–1) specification.

This complete unit contains everything needed to teach, practise, revise and assess atomic structure, with five fully editable lessons plus differentiated revision, assessment and feedback resources.

What’s Included?
• 5 fully resourced lesson PowerPoints with embedded answers
• AfL checkpoints, differentiated activities and exam-style practice
• Print-ready worksheets and scientific-skills activities
• Detailed Scheme of Work with Edexcel specification mapping
• Student revision checklist and visual learning map
• Support, Core and Stretch revision worksheets with mark scheme
• 30-mark end-of-unit assessment and mark scheme
• Post-test feedback sheet with targeted follow-up practice

Topics Covered
• Development of the atomic model
• Protons, neutrons and electrons
• Relative charges and masses of subatomic particles
• Atomic number and mass number
• Atomic and nuclear size and scale
• Electronic configurations of the first 20 elements
• Isotopes
• Relative atomic mass and isotope-abundance calculations
• Formation of positive and negative ions
• Calculating numbers of protons, neutrons and electrons in atoms and ions

Key Features
Edexcel aligned: Designed for Pearson Edexcel GCSE Chemistry (1CH0), covering the development of atomic models, atomic structure, electronic configurations, isotopes, relative atomic mass and ion formation.

Differentiated: Support, Core and Stretch activities provide scaffolding and challenge for a range of learners, with opportunities to develop calculation, interpretation and extended-explanation skills.

Conceptually sequenced: Students move from the historical development of atomic models through modern atomic structure and electronic configurations to isotopes and ions, building understanding progressively across the unit.

Ready to teach: A coherent five-lesson unit covering teaching, practice, revision, assessment and post-test feedback — saving hours of planning and preparation.

Looking to try out the AchieveWithZora range? The first lesson in this unit can be found for FREE here.