In the alpha particle scattering experiment, positively charged alpha particles were fired at a very thin sheet of gold foil.
If the plum pudding model had been correct, which result would scientists have expected?
Nearly all would pass through with only small deflections, because the positive charge is spread out
Most would bounce back towards the source, because each atom is a solid ball of positive charge
A few would bounce straight back, because they would hit the negative electrons in the atom
None would pass through the foil, because the electrons in each atom would absorb them
46 exam-style questions on Edexcel GCSE Chemistry 2.1 Atomic structure, covering 2.1.1 Development of the atomic model, 2.1.2 Structure of the atom and subatomic particles, 2.1.3 Mass number, isotopes and relative atomic mass, and 2.1.4 Calculating relative atomic mass from isotopic abundance. Each one has a worked solution and a mark scheme showing where the marks go.