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Plum Pudding Model

Key Stage 4

Meaning

A diagram of an atom in the Plum Pudding Model.

The Plum Pudding Model is a model of the atom which suggests the atom is a solid sphere of positive charge with negatively charged electrons spread within it.

About the Plum Pudding Model

In the Plum Pudding Model the atom is neutral because the negatively charged electrons are fixed within a larger sphere of positive charge.
The Plum Pudding Model is named after a desert made from sponge with plums stuck inside. It was imagined that the atom had a sphere of positive charge like the sponge of the cake and electrons suck inside, like the plums stuck inside the sponge.
The Plum Pudding Model was proposed by J.J. Thompson who discovered the electron and realised it was part of an atom.
The Plum Pudding Model was proven false by Rutherford's Alpha Scattering Experiment and was replaced by the Nuclear Model.

References

AQA

Plum pudding model, page 42, GCSE Chemistry, CGP, AQA
Plum pudding model, page 104, GCSE Combined Science; The Revision Guide, CGP, AQA
Plum pudding model, page 108, GCSE Combined Science Trilogy; Physics, CGP, AQA
Plum pudding model, page 120, GCSE Physics; The Complete 9-1 Course for AQA, CGP, AQA
Plum pudding model, page 132, GCSE Physics; Student Book, Collins, AQA
Plum pudding model, page 19, GCSE Chemistry; The Revision Guide, CGP, AQA
Plum pudding model, page 42, GCSE Combined Science Trilogy; Chemistry, CGP, AQA
Plum pudding model, page 43, GCSE Physics; The Revision Guide, CGP, AQA
Plum pudding model, pages 94-95, GCSE Physics; Third Edition, Oxford University Press, AQA
Plum-pudding model of the atom, pages 85, 91, GCSE Physics, Hodder, AQA

Edexcel

Plum pudding model, page 149, GCSE Physics, CGP, Edexcel
Plum pudding model, page 15, GCSE Chemistry; The Revision Guide, CGP, Edexcel
Plum pudding model, page 32, GCSE Chemistry, CGP, Edexcel
Plum pudding model, pages 78, 172, GCSE Combined Science; The Revision Guide, CGP, Edexcel
Plum-pudding model, page 49, GCSE Physics; The Revision Guide, CGP, Edexcel

OCR

Plum pudding model, page 13, Gateway GCSE Chemistry; The Revision Guide, CGP, OCR
Plum pudding model, page 83, Gateway GCSE Combined Science; The Revision Guide, CGP, OCR
Plum-pudding model of the atom, pages 19, Gateway GCSE Physics, Oxford, OCR