A scientist fires a beam of alpha particles at a very thin sheet of platinum foil and records where the alpha particles go after reaching the foil.
Which observation would show that each platinum atom is mostly empty space?
Most of the alpha particles are stopped inside the foil.
Most of the alpha particles travel through the foil without changing direction.
A small number of alpha particles are deflected through large angles.
Most of the alpha particles bounce back towards the source.
101 exam-style questions on OCR GCSE Chemistry 1.2 Atomic structure, covering 1.2.1 Development of the atomic model, 1.2.2 The nuclear model and the size of atoms, and 1.2.3 Subatomic particles in atoms and ions. Each one has a worked solution and a mark scheme showing where the marks go.