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4.1 Atoms and isotopes

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Question 7
F

Alpha particles were fired at a very thin sheet of gold foil. The figure shows three of the paths, P, Q and R, that the alpha particles followed.

Figure: Three paths followed by alpha particles fired at a thin sheet of gold foil

image

a.

Give the letter of the path that was followed by almost all of the alpha particles.

[1]
b.

Give one conclusion about the atom that can be made from the path followed by almost all of the alpha particles.

[1]
c.

Path R shows an alpha particle that has come back towards the source. Explain what this tells scientists about the atom.

[2]
d.

Give the name of the model of the atom that these results led to.

[1]
Markscheme

4.1 Atoms and isotopes Questions

  1. GCSE
  2. /Physics
  3. /4.1 Atoms and isotopes

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.

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