Across
- 4. group 2 in the periodic table
- 6. the mass of a single atom
- 7. found the model of the atom that we use today
- 8. a neutral meaning it has no charge
- 10. particles that are smaller than an atom
- 11. two or more elements combined in a specific way
- 13. electrons travel around it
- 14. the acceptance of the idea of an atom
Down
- 1. found out that there are positive charges in atoms
- 2. group 1 of the periodic table
- 3. atomic number rounded to the nearest whole number
- 4. matter made of tiny particles that can not be broken down any further
- 5. negatively charged particle
- 9. discovered "subatomic" particles
- 12. have both metals and nonmetals