The questions in this quiz are suitable for GCSE physics students studying structure of the atom, atoms and isotopes and ions. If you struggled with the quiz, don't panic - we've got you!

Atoms, isotopes and ions - AQA Atoms are made up of protons, neutrons and electrons. Change the number of neutrons in an atom and it becomes an isotope, change the number of electrons, it becomes ...

the resulting collisions cause the ions to lose or gain neutrons or protons and become unstable. This causes them to create thousands of rare isotopes, themselves highly unstable — often ...