Across
- 5. element that lacks most of the properties
- 6. radioactive isotope
- 10. atom with the same number of protons, but a different number of neutrons
- 11. positive electrical charge
- 13. gradual wearing away of a metal element
- 14. class of elements character used by physical properties
Down
- 1. element that has some characteristics of metals and nonmetals
- 2. the way a mineral reflects light from its surface
- 3. elements in the same verticle column of the periodic table
- 4. no electrical charge
- 7. basic/smallest particle
- 8. tiny, negatively charged particle
- 9. element found in group 17 of the periodic table
- 11. horizontal row of elements in the periodic table
- 12. middle of an atom