GCSE Physics – Models of the atom

Last updated: 14/04/2021
OCR 21st Century GCSE Science – Combined science higher Radioactive materials GCSE Physics – Models of the atom

Learning Objectives

-I can describe how and why a scientific model changes over time
-I can describe the plum pudding model of the atom
-I can explain why Rutherford’s experiment that disproved the plum pudding model
-I can describe how Bohr adapted the model of the atom
-I can recall what Chadwick added to the model of the atom

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  1. Current
  2. Review
  3. Answered

  1. What has happened to the model of the atom over time?

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  2. Why do scientific models change over time?

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  3. What were atoms first thought to be?

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  4. Which sub-atomic particle was discovered first?

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  5. Which sub-atomic particle was discovered last?

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  6. What model was developed when the electron was discovered?

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  7. What did the plum pudding model suggest about the atom?

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  8. What did the plum pudding model suggest about electrons?

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  9. Why was the model called plum pudding?

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  10. What charge did Rutherford say the nucleus has?

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  11. What experiment involved gold foil?

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  12. Who carried out the alpha particle scattering experiments?

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  13. What did the alpha particle experiment show?

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  14. What else did the alpha particle experiment show?

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  15. What did Niels Bohr do?

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  16. How did Bohr change the nuclear model?

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  17. What is the name for electron energy levels?

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  18. What was then discovered about the nucleus?

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  19. What name was given to positive particles in the nucleus?

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  20. Who carried out further work on the nucleus after the proton was discovered?

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  21. What did James Chadwick discover?

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  22. When were neutrons discovered?

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  23. What is the most recent atomic model?

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  24. What is a difference between the plum pudding and nuclear model?

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  25. What is a difference between the plum pudding and nuclear model?

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