AS level Chemistry - atomic structure - atomic models quiz

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1. J J Thompson came up with the plum pudding model, but what was it?

  • A spherical shape, with a positively charged pudding and randomly dotted negative electrons
  • A negatively charged pudding of electrons, with randomly dotted protons
  • A large lumpy mass that was a big mixture of protons, nuetrons and electrons
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2. How did Rutherford discover his improved version of an atomic model?

  • alpha particles fired straight at a thin sheet of gold. They expected most of them to be deflected by the possitive pudding, but most passed straight through, with some being deflected back
  • They found faults in the plum pudding model, so they guessed what it should be
  • They used an electron microscope
  • They used a large amount of heat and managed to split apart the atom, which they studied underneath a microscope

3. What is another atomic model that hasn't been metioned yet?

  • There aren't any other models
  • Quantum model
  • double nucleus model

4. Why do scientists not always use the quantum model?

  • There is a lack of evidence for this model, so some scientists prefer to use the Bohr model
  • Becuase it can be too complex, so they use the refined Bohr model
  • It may not be accurate

5. Jonh Dalton described atoms as...

  • Clear solid spheres with pigment in the nucleus
  • A positively charged pudding, with randomly dotted electrons throughout
  • Solid spheres, with different elements made up of different spheres
  • Small circular blobs with tiny whizzing particles within them

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