Across
- 3. father of the periodic table
- 5. type of elements located on the right side of the periodic table
- 6. positively charged ion formed by electron loss
- 7. atoms with same atomic number but different mass
- 10. subatomic particle located in energy levels
- 12. family name for series of period seven elements located at the bottom of the periodic table
- 13. scientist that proposed that electrons moved in fixed orbits around the nucleus
- 15. another name for covalent compounds
- 17. a educated guess based on observations
Down
- 1. a measure of an atom's ability to attract electrons in a bond
- 2. ionized gas found in lightning
- 3. type of elements on the staircase on the periodic table
- 4. mass per unit volume
- 6. type of bond formed when electrons are shared
- 8. a positively charged particle
- 9. type of bond formed through the transfer of electrons
- 11. family name for series of period six elements located at the bottom of the table
- 12. negatively charged ion formed by electron gain
- 14. type of elements located on the left side of the periodic table
- 16. smallest unit of an element
