Across
- 1. Who created the periodic table? (last name)
- 5. What side of the periodic table are non-metals?
- 7. part of an atom that contains the protons and neutrons
- 8. particles in an atom with a positive charge
- 10. two of the same atom with a different amount of neutrons
Down
- 2. particles in an atom with no charge
- 3. particles in an atom with a negative charge
- 4. cloud spherical cloud with varying density is an atom
- 6. What side of the periodic table are metals?
- 9. the group in the periodic table that is unreactive