A teacher uses a currant bun to represent an early model of the atom. The dough fills the bun and represents positive charge. The currants represent negative electrons embedded in the dough.
Which path would this model predict for an alpha particle travelling through the atom?
It is stopped inside the atom because the dough is solid.
It turns back after reaching positive charge at the centre.
It is deflected through a large angle by an embedded electron.
It passes through with no more than a very small deflection.
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.