Across
- 2. The rows in the periodic table.
- 3. An atom with a charge.
- 4. Number Sum of the protons and neutrons.
- 6. Creator of the table.
- 10. What does the element K stand for?
- 11. Heaviest element.
- 12. What does NaCl stand for?
- 13. Most rare element.
- 16. The columns that share chemical properties.
- 17. The smallest particle of an element that retains the element properties.
- 19. Only metal liquid at room temperature.
Down
- 1. Special element because it is on the left side of the stair step line.
- 3. Atoms of the same element that have different numbers or neutrons.
- 5. Right of stair step line.
- 7. Along stair step line.
- 8. Common model used to represent an atom.
- 9. Number number of protons an atom has.
- 14. Number of man made elements.
- 15. How many families are on the periodic table?
- 18. Element that goes by Ds.
