Difference between revisions of "Nuclear Model"
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The [[electron]]s must not be in the centre of the [[atom]], they must be [[orbit]]ing the [[nucleus]]. | The [[electron]]s must not be in the centre of the [[atom]], they must be [[orbit]]ing the [[nucleus]]. | ||
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+ | ===References=== | ||
+ | ====AQA==== | ||
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+ | :[https://www.amazon.co.uk/gp/product/1782946403/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782946403&linkCode=as2&tag=nrjc-21&linkId=32a0abb60dff015b15b50e9b1d7b4644 ''Nuclear model (atoms), pages 109, 110, GCSE Combined Science Trilogy; Physics, CGP, AQA ''] | ||
+ | :[https://www.amazon.co.uk/gp/product/1782945970/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782945970&linkCode=as2&tag=nrjc-21&linkId=a120d24dcc7cc7a58192069a3aafc1d2 ''Nuclear model (atoms), pages 121, 122, GCSE Physics; The Complete 9-1 Course for AQA, CGP, AQA ''] | ||
+ | :[https://www.amazon.co.uk/gp/product/1782945598/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782945598&linkCode=as2&tag=nrjc-21&linkId=ad276ad49df77ab4b40ab4fd0fe10115 ''Nuclear model (of the atom), pages 104, 197, GCSE Combined Science; The Revision Guide, CGP, AQA ''] | ||
+ | :[https://www.amazon.co.uk/gp/product/1471851370/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1471851370&linkCode=as2&tag=nrjc-21&linkId=01c69b0ae058f809cf636033e6ba793e ''Nuclear model of the atom, pages 91-2, GCSE Physics, Hodder, AQA ''] | ||
+ | :[https://www.amazon.co.uk/gp/product/1782945571/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782945571&linkCode=as2&tag=nrjc-21&linkId=9e29fad914244909903e5e93f8a01d197 ''Nuclear model, page 19, GCSE Chemistry; The Revision Guide, CGP, AQA ''] | ||
+ | :[https://www.amazon.co.uk/gp/product/178294558X/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=178294558X&linkCode=as2&tag=nrjc-21&linkId=f0dfb66dafcb0c6e9449e7b1a4ae1ac340 ''Nuclear model, page 43, GCSE Physics; The Revision Guide, CGP, AQA ''] | ||
+ | :[https://www.amazon.co.uk/gp/product/1782945962/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782945962&linkCode=as2&tag=nrjc-21&linkId=476bb5c8d1dfb5c08ac81b6d4d1c98d8 ''Nuclear model, pages 22, 23, 42, 43, GCSE Chemistry, CGP, AQA ''] | ||
+ | :[https://www.amazon.co.uk/gp/product/178294639X/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=178294639X&linkCode=as2&tag=nrjc-21&linkId=51599bb45a2bfaf7c1b6a978b2ca2616 ''Nuclear model, pages 22, 23, 42, 43, GCSE Combined Science Trilogy; Chemistry, CGP, AQA ''] |
Revision as of 14:41, 10 November 2019
Contents
Key Stage 4
Meaning
The Nuclear Model is a model of the atom which suggests there is a positively charged nucleus in the centre of an atom with electrons orbiting around the nucleus.
About the Nuclear Model
- The Nuclear Model was first proposed by Ernest Rutherford after he successfully disproved the Plum Pudding Model of the atom using his alpha scattering experiment.
- In the Nuclear Model most of the atom is empty space. The majority of the mass of the atom is concentrated in a small central nucleus. This central nucleus has a strong positive charge while negatively charged electrons orbit the nucleus.
Evidence for the Nuclear Model
- In Rutherford's Alpha Scattering Experiment several observations about the path of alpha particles through a thin sheet of Gold foil that led to the development of the Nuclear Model:
Observation | Conclusion |
Most of the alpha particles pass straight through the foil. | The atom must be mostly empty space. |
Some of the alpha particles were deflected by a small angle. | The mass of the atom must be concentrated in an extremely small volume in the centre. |
A very small number of alpha particles came back in the direction of the detector. (Deflected more than 90°.) | The centre of an atom must have a strong positive charge.
The electrons must not be in the centre of the atom, they must be orbiting the nucleus. |
References
AQA
- Nuclear model (atoms), pages 109, 110, GCSE Combined Science Trilogy; Physics, CGP, AQA
- Nuclear model (atoms), pages 121, 122, GCSE Physics; The Complete 9-1 Course for AQA, CGP, AQA
- Nuclear model (of the atom), pages 104, 197, GCSE Combined Science; The Revision Guide, CGP, AQA
- Nuclear model of the atom, pages 91-2, GCSE Physics, Hodder, AQA
- Nuclear model, page 19, GCSE Chemistry; The Revision Guide, CGP, AQA
- Nuclear model, page 43, GCSE Physics; The Revision Guide, CGP, AQA
- Nuclear model, pages 22, 23, 42, 43, GCSE Chemistry, CGP, AQA
- Nuclear model, pages 22, 23, 42, 43, GCSE Combined Science Trilogy; Chemistry, CGP, AQA