Across
- 5. An element with 5 electrons
- 6. Another name for a vertical column
- 7. Another name for a horizontal row
- 8. Negatively charged particle found in the energy levels
- 9. Neutrally charged particle found in the nucleus
- 12. Positively charged particle found in the nucleus
Down
- 1. Tells us how many protons and electrons are in an element
- 2. An element with 3 energy levels and 8 electrons in the outermost energy level
- 3. The first element listed on the periodic table
- 4. When atoms bond by combining particles
- 10. An element with 8 protons and 8 electrons
- 11. When atoms bond by swapping/trading particles