Across
- 2. what element is needed most by plants?
- 3. What type of elements are on the left side of the periodic table?
- 6. what is inside of the electron cloud?
- 8. what element has an atomic mass of 19?
- 10. what is the element with 79 protons?
- 11. What fills a balloon and makes it float?
- 13. What is the positive charge inside of the nucleus?
- 14. what element has 5 neutrons?
- 15. What element can be used as poison?
- 17. What type of element is on the right side of the periodic table?
- 18. What element has 146 neutrons?
- 19. what are the numbers on the left side of the periodic table?
Down
- 1. who was the first to arrange the periodic table by mass?
- 4. What element has an atomic mass of 48?
- 5. What is the number in the top right corner of the element picture?
- 7. what element has 20 protons?
- 9. what is the negative charge inside of the nucleus?
- 11. What is the name of group 17 on the periodic table?
- 12. what type of element does the periodic table least consist of?
- 16. what are the columns on the periodic table?