Across
- 2. a horizontal row in the periodic table that tells you how many energy levels an element has
- 3. a column in the periodic table that tells you how many valence electrons a element has
- 5. a small natural particle in atoms
- 7. is a poor conductor and brittle
- 10. a substance that can't be broken down
Down
- 1. a small negatively charged particle in atoms
- 4. a small positively charged particle in atoms
- 6. solid material that is hard, shiny, and malleable
- 8. basic unit of chemical elements
- 9. an element that has both metal and non metal properties