Across
- 4. when one substance is dissolved into another
- 7. ability to allow heat and electricity to flow
- 10. most reactive element in group 1A
- 11. number of protons in an atom
- 13. type of electron on outermost energy level
- 15. total of protons and neutrons in an atom
- 16. positively charged particle in an atom
- 17. type of chemical bond that shares electrons
- 19. type of chemical bond that transfers electrons
- 20. a negatively charged ion
Down
- 1. ability of a substance to react
- 2. most reactive element in group 7A
- 3. a mixture that the different parts cant be seen
- 5. neutrally charged particle in an atom
- 6. negatively charged particle in an atom
- 8. center of an atom that is positively charged
- 9. a mixture that the different parts can be seen
- 12. ability to be hammered without shattering
- 14. thickness of a liquid
- 18. a positively charged ion