Across
- 3. ____ are a negatively charged ion
- 4. ____ bonds transfer electrons
- 5. vertical columns on the periodic table
- 9. Neutrons + Protons
- 10. _____ bonds share electrons
- 13. horizontal rows on the periodic table
- 15. occurs when a compound is broken into two simpler products
- 16. metals found in group 2
- 18. a chemical change in which an element reacts with oxygen and produces Co2 and H2O
- 20. this subatomic particle has a negative charge
Down
- 1. have a proton to neutron ratio over 3:2
- 2. a subatomic particle with a positive or negative charge
- 6. This radiation can only be stopped by large amounts of concrete or lead
- 7. gasses found in group 18
- 8. this subatomic particle has a positive charge
- 11. metals that are found in group 1
- 12. same element with more or less neutrons
- 14. ____ is released from alpha radiation
- 17. elements found in group 17
- 18. ____ are a positively charged ion
- 19. organic compounds must include _____