Across
- 5. Combination of two of more atoms
- 6. the gain of oxygen by a substance during a chemical reaction
- 7. I have the capacity to kill superman
- 9. a substance that speeds up a reaction without itself being consumed
- 11. a solid that forms during a reaction
- 13. used to weigh substances
- 14. a reaction that takes in energy in the form of heat
- 17. group 1 elements
- 18. elements such as hydrogen, nitrogen, and oxygen are called ........
- 20. Hand protection
- 22. Burner
Down
- 1. the element with the lowest atomic mass
- 2. Paper used to measure pH
- 3. a reaction between an acid and base, forming salt and water
- 4. this is the same as the atomic number
- 8. the group 7 elements
- 10. negatively charged ions
- 12. elements are listed on the period table in order of .......... atomic number
- 15. a substance that causes serious burns
- 16. I am the only element in the halide family that is a liquid
- 19. eye protection
- 21. chemical link that holds molecules together
- 22. Cylindrical glass container