Across
- 2. a diagram created by bohr rutherford
- 5. Used to heat up objects or solutions
- 8. an atom that has lost electrons
- 9. The heaviest atom on the periodic table
- 11. the vertical columns of a periodic table
- 13. negatively charged ion
- 14. different species of atoms of an element
- 15. determines the amount of protons
- 16. the negative charge in an atom
- 17. Used to magnify microscopic organisms
Down
- 1. has no charge in an atom
- 3. contains one hydrogen and two oxygen atoms
- 4. has the atomic number 2 and atomic weight of 4
- 6. the positive charge in a atom
- 7. Has the atomic number 15 and atomic weight of 31
- 10. the lightest element on the periodic table
- 12. A cylindrical holder for measuring solution
- 18. positively charged ion