May/June 2026 Paper 21

2026 · 40 questions · 40 parts · 40 marks

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34Nuclear Model AtomMedium1 mark
When a beam of positively charged alpha particles is directed towards a thin sheet of gold in a vacuum, the following observations are made.
  1. 1
    Most of the alpha particles pass straight through the sheet of gold.
  2. 2
    A small number of alpha particles are deflected through angles greater than .
Which row links each observation to its appropriate conclusion?
observation 1observation 2
AThe atom consists mainly of empty space.The negative charge is concentrated at the centre of the atom.
BThe atom consists mainly of empty space.The positive charge is concentrated at the centre of the atom.
CThe negative charge is concentrated at the centre of the atom.The atom consists mainly of empty space.
DThe positive charge is concentrated at the centre of the atom.The atom consists mainly of empty space.