An electron in an atom moves from an energy level far from the nucleus to an energy level close to the nucleus. What happens?
The atom absorbs electromagnetic radiation and gains charge.
The atom emits electromagnetic radiation and stays neutral.
The atom emits one of its electrons and becomes a positive ion.
The atom absorbs one extra electron and stops emitting radiation.
40 exam-style questions on AQA GCSE Physics 4.1 Atoms and isotopes, covering 4.1.1 The structure of an atom, 4.1.2 Mass number, atomic number and isotopes, and 4.1.3 The development of the model of the atom (common content with chemistry). Each one has a worked solution and a mark scheme showing where the marks go.