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