Subjects / JC Science / Chemical World
Atomic structure
Protons, neutrons and electrons, atomic number and mass number.
In review
1st Year2nd Year3rd Year Common
Helps to know first:
Elements, compounds and mixtures
15practice questions
Fill the gaps: 2 · Match the pairs: 2 · Multiple choice: 5 · Numeric answer: 4 · Put in order: 1 · Short answer: 1
Each question has up to three hints, a worked explanation, and is tracked in your progress and review plan.
Practise this topic