Across
- 5. elements that emit radiation
- 7. a good conductor of electricity
- 8. a column on the periodic table
- 10. A neutral particle
- 11. ability to be pulled into thin wires
- 13. a chart of the elements in rows and columns
- 16. describes the ability of metal to reflect light
- 17. an element with properties of both metal and nonmetals
- 19. a particle with one negative charge
- 20. an element in group 17 on the periodic table
Down
- 1. a particle with one positive charge
- 2. ability of a substance to be hammered or rolled into sheets
- 3. where most of the atoms mass and positve charge is in
- 4. conducts electricity at high levels
- 6. the smallest piece of an element
- 9. rows on the periodic table
- 12. a group of atoms held together
- 14. an atom that is no longer neutral
- 15. atoms amounts same element that have different amount of neutrons.
- 18. elements that have no metallic properties