Across
- 1. makes up the right side of the periodic table, properties include being brittle and dull
- 3. a positively charged particles, inside of the nucleus
- 5. a particle with no charge inside of the nucleus
- 7. make up the staircase dividing the metals and nonmetals, includes elements like boron and arsenic
- 9. type of material that holds energy very well
Down
- 2. a negatively charged particle surrounding nucleus
- 4. on the left side of the periodic table, properties include being a good conductor
- 6. the center of an atom
- 8. atom with more electrons than protons