HIstory of atom

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Across
  1. 2. Theory-A theory of the nature of matter
  2. 3. the atomos theory
  3. 5. Dalton-English school teacher who developed a theory involving the relationship between matter and the atom
  4. 6. Pudding Model-A historical scientific model of the atom
  5. 10. Model- the atom consists of a nucleus surrounded by orbiting electrons.
  6. 12. elements Theory-the first plural attempt to explain life and change and was based on the combination of four different roots that give rise to life and matter
  7. 13. Bohr-Suggested that instead of electrons moving in a random motion they actually follow a path around the nucleus
Down
  1. 1. that matter consist of all 4 elements
  2. 4. rutherford-Created the gold foil experiment,Also experimented with thomason models
  3. 5. thomson-Created plum pudding model
  4. 7. of multiple proportions- when two elements combine with each other to form more than one compound, the weights of one element that combine with a fixed weight of the other are in a ratio of small whole numbers.
  5. 8. Cloud theory- represents atoms containing a nucleus of protons and neutrons and a vague gradient or cloud surrounding it containing the electrons
  6. 9. theory-matter is composed of discrete units called atoms, as opposed to the obsolete notion that matter could be divided into any arbitrarily small quantity.
  7. 11. of definite composition-Which means all samples of a given chemical compound have the same elemental composition by mass