Across
- 2. particle of matter that has no charge
- 3. element with the atomic number 2
- 6. smallest particle of an element that can exist
- 11. element with the atomic symbol Hg
- 12. particle of matter that has a negative charge
- 14. a table that shows all of the elements arranged by number
Down
- 1. element with the atomic symbol Zn
- 2. part of an atom that has positive charge and most of the atom's mass
- 3. element with an atomic mass of 1
- 4. physical substance that everything is made of
- 5. to join
- 7. element with the atomic symbol Cu
- 8. smallest particle of a substance that can exist
- 9. particle of matter that has a positive charge
- 10. element with the atomic mass of 39
- 13. element with the atomic symbol Ti
