Across
- 3. letter or series of letters that represent an element on the periodic table
- 5. part of a system separated from other parts by physical boundaries
- 7. two or more atoms that are chemically combined
- 8. molecule containing 2 or more chemically combined elements
- 9. phase of matter that is an ionized gas; high temperature
- 10. type of solid with no internal geometric pattern (such as gel)
- 13. column of nonreactive elements on periodic table
- 15. number that indicates how many atoms of that element are in a molecule
- 16. H2O is the _____ of water (2 words)
- 18. an atom or group of atoms with a positive or negative charge
- 19. particular type of matter with definite fixed composition
- 20. ion with a negative charge
- 21. category of elements that have properties similar to metals and nonmetals
- 23. homogeneous mixture (such as salt water)
- 24. anything that has mass and occupies space
- 25. substance that cannot be broken down by chemical means
- 27. ion with a positive charge
Down
- 1. phase of matter with definite volume, no definite shape
- 2. category of elements that aren't conductive and brittle
- 3. body of matter under consideration
- 4. the only diatomic element that is a liquid at room temperature
- 6. matter that is consistent throughout (such as water)
- 11. phase of matter with with indefinite volume and shape
- 12. matter that is not consistent throughout (such as apple pie)
- 14. phase of matter with definite shape and volume
- 16. diamonds, graphite and petroleum are some forms of this element
- 17. smallest possible particle of an element
- 21. matter containing 2 or more substances
- 22. elements that pair together in nature (seven in total)
- 26. category of elements that are highly conductive and malleable