Defining the Atom 4.1

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Across
  1. 2. What determines the identity of an element?
  2. 4. What kind of microscope is used to look at atoms? (2 words)
  3. 7. the smallest particle of an element that retains its identity
  4. 8. all atoms of the same element are
  5. 10. Where are electrons located? (2 words)
  6. 14. What is a neutrons charge?
Down
  1. 1. first to suggest the existence of atoms.
  2. 3. Where are protons and neutrons located?
  3. 5. indivisible is the meaning of
  4. 6. behavior Democritus's theory did not explain? (2 words)
  5. 9. What is a protons charge?
  6. 11. A well-substantiated, testable explanation for a set of observations
  7. 12. What is an electrons charge?
  8. 13. Who transformed Democritus's idea on atoms into a scientific theory?