Across
- 1. it lowers the activation energy required to start a reaction
- 4. a mixture where the components dissolve in each other
- 9. a crystal that contains attached water molecule
- 12. a negative subatomic particle discovered by Thomson
- 13. ions made up of multiple atoms
- 14. when electrons jump to higher energy levels
- 17. contains protons and neutrons
- 19. when the forward and reverse reaction occur at the same rate
- 21. substance shown after the arrow in a chemical equation
Down
- 1. number used to balance chemical equations
- 2. Mrs. Torres' favorite compound
- 3. it goes down as the volume goes up
- 5. nuclear emission with the greatest penetration power
- 6. a nuclear emission with no mass and a negative charge
- 7. two or more pure substances physically combined
- 8. measures concentration
- 10. a measure of the disorder in a system
- 11. two or more elements chemically combined
- 13. horizontal arrangement of elements in the periodic table
- 15. reactions that absorb energy
- 16. from gas to solid
- 18. combines two light nuclei to form a heavier nucleus
- 20. from solid to gas