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2.1 Atomic structure

2.1 Atomic structure

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Question 2
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In 1897, J.J. Thomson proposed the 'plum pudding' model of the atom.

According to the plum pudding model:

  • The atom is a sphere of uniform positive charge.
  • Negative electrons are embedded randomly throughout this positive charge.
  • There is no empty space within the atom.

Give two differences between Thomson's plum pudding model of the atom and today's nuclear model of the atom.

[2]
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2.1 Atomic structure Questions

  1. GCSE
  2. /Chemistry
  3. /2.1 Atomic structure

87 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.

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