Across
- 4. technique used to find the concentration of an unknown solution
- 8. mass per unit of volume
- 9. the substance that does the dissolving (usually water)
- 11. a particle representing a quantum of light
- 12. a vertical column on the periodic table
- 15. electrons in the outermost shell used for bonding
- 18. particle with no charge
- 20. a reaction that absorbs heat
Down
- 1. a negatively charged ion
- 2. a horizontal row on the periodic table
- 3. substance that speeds up a reaction without being consumed
- 5. highly reactive group 1 metals
- 6. atoms of the same element with different numbers of neutrons
- 7. a positively charged ion
- 10. bond formed by the sharing of electrons
- 13. a bond with an uneven distribution of charge
- 14. positively charged particle with no charge
- 16. group 18 gases that are generally non-reactive
- 17. reaction where two substances combine to form one
- 19. a solution with a pH of exactly 7