Across
- 1. has 2 protons, 2 neutrons, 2 electrons
- 4. large and heavy like protons and is also located in the nucleus
- 6. another name for columns
- 8. another name for rows
- 9. on the right side of the staircase on the periodic table
- 10. a model with protons neutrons and electrons
Down
- 2. found on the left side of the staircase on the periodic table
- 3. first name of the designer of the periodic table of elements
- 5. very light particals, have a negative charge, move around the nucleus
- 7. much larger and heavier than electrons, have positive charge