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AQA · GCSE · Chemistry · Higher

Naming early atomic models

Q03.1 2 marks

Figure 2 shows two early models of the atom.

Figure 2
Figure 2

Figure 2

Enlarged question image

Figure 2

Name the models of the atom shown in Figure 2.

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Marking points

  1. 1 Model A field names the plum pudding/Thomson model.
  2. 2 Model B field names an accepted Bohr/nuclear/planetary/Rutherford–Bohr model.

Full-mark answer

Model A: plum pudding model. Model B: Bohr model.

Why this answer loses marks

Model A is the nuclear model and Model B is the plum pudding model.

Match each name to its visible structure: diffuse positive charge differs from a nucleus with shells.