Across
- 2. Vertical columns of the periodic table
- 6. Number of protons in the nucleus of an atom
- 8. Negatively charged subatomic particles
- 9. Horizontal rows of the periodic table
- 10. Symbol used to identify an element
- 11. An element that is not a metal
- 13. An element that's properties are intermediate between those of metals and solid semiconductors
Down
- 1. Table of elements
- 3. Russian chemist who created the periodic table
- 4. Characteristics of a particular substance that can be observed
- 5. Positively charged subatomic particles
- 6. The mass of an atom
- 7. The outside part of an atom's nucleus
- 11. Neutral charged subatomic partivles
- 12. An element characterized by high electrical and thermal conductivity