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