Across
- 1. how many periods are in the periodic table
- 3. the element with an atomic number of one
- 4. vertical lines on the table
- 7. what the periodic table is sorted by
- 10. element with the atomic number 118
- 12. how many elements their are
- 13. where you have to look for elements above the atomic number of 90
- 15. horizantal lines on the table
Down
- 2. small particles circling the atom
- 5. found in the nucleas along with nuetrons
- 6. list of all elements known to man
- 8. different atoms bonded together
- 9. any of the group 18 elements
- 11. how many groups are in the periodidc table
- 14. smallest particle of matter