Classification of Matter

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Across
  1. 1. positively charged ion
  2. 2. anything with mass and occupies space
  3. 7. negatively charged ion
  4. 8. matter with a definite, fixed composition
  5. 9. positively or negatively charged atom or group of atoms
  6. 11. substance that cannot be broken down by chemical means to simpler substances
  7. 12. union of two or more atoms
  8. 14. solids at room temperature
  9. 16. solid without any regular, internal geometric shape
  10. 17. prepared by mixing correct amounts of salt and water (two words put together)
  11. 21. numbers that appear below and to the right of symbol of an element
  12. 22. smallest particle of an element that can exist
  13. 23. definite volume but not shape
  14. 25. has same properties throughout
Down
  1. 1. substance that contains two or more elements
  2. 3. homogeneous part separated by physical boundaries
  3. 4. indefinite volume and no fixed shape
  4. 5. abbreviations for compounds (two words put together)
  5. 6. contain exactly two atoms (two words put together)
  6. 10. two or more physically distinct phases
  7. 13. not uniform in appearance, has parts with different properties (two words put together)
  8. 15. material containing two or more substances
  9. 18. properties intermediate between metals and those of nonmetals
  10. 19. body of matter under consideration
  11. 20. definite shape and volume
  12. 24. not lustrous, low melting points and densities
  13. 26. abbreviation of each element