Across
- 2. pure substances have two or more elements
- 6. the oxidation state of an element is decreased
- 7. Mr president of America
- 9. soluble base
- 10. mix up evenly by random movement
- 11. speed up of a reaction
- 12. sleepy boy
- 13. ionic compounds
Down
- 1. waste stuff
- 3. insoluble formed by mixing two solutions
- 4. mass divided by volume
- 5. turn from gas to solid directly
- 7. sweet Girl
- 8. a word when food goes bad