Across
- 2. Principle ingredient in old thermometers
- 4. Product of cellular respiration
- 5. Process for purifying a liquid (such as water)
- 7. Number of valence electrons for Lithium, or any other alkali metal in group 1
- 10. Currently, there are 118 ______ on the periodic table
- 11. 78% of the earth's atmosphere
- 14. Color, melting point, smell, or density
- 15. study of how matter is made and how it changes Chemistry
- 16. The formation of bubbles, or a release of gas, is a potential indication that this has occurred Chemical reaction
- 18. Something that has mass and takes up space
- 20. Method for separating salt from water
- 21. Equal to the weighted average of an element's isotopes
- 23. Method for separating solids from water
- 24. Charged atoms
- 25. Dihydrogen Monoxide
Down
- 1. What an element's atomic number represents
- 3. pH, flammability, reactivity, or combustion
- 4. Carbon monoxide (or perhaps the state of Colorado)
- 6. The periodic table has 18 groups and 7 _____
- 8. Mass divided by volume
- 9. Law stating that matter is neither created nor destroyed
- 12. 6.02 x 1023 atoms
- 13. Combination of two or more substances
- 17. Potent greenhouse gas
- 19. Famous atomic model named after a Danish scientist
- 22. Food for plants