Across
- 3. Things with a PH level equal to 7
- 6. Number 1 on the periodic table
- 7. Elements in the periodic table with full outer shells
- 8. Name of an unstable and decomposing element; ex. uranium
- 9. Things with a PH level lower than 7
- 10. Elements right of the 'stair step'
- 12. Dihydrogen monoxide
- 13. An element with a positive or negative charge
- 15. Things with a PH level higher than 7
- 16. An ion with more protons than electrons is charged ____
Down
- 1. Similar to metals, but without some of the properties
- 2. Type of electron that is on the outer shell of an element
- 4. An ion with more electrons than protons is charged ____
- 5. Elements left of the 'stair step'
- 11. Total mass of an isotope
- 14. A variant of an element with more or less neutrons