classifying Matter

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Across
  1. 4. All atoms in the group are the same type
  2. 5. to form a solution by mixing evenly
  3. 9. anything that has mass and takes up space
  4. 10. matter with a composition that is always the same
  5. 12. a black solid
  6. 15. matter that can vary in composition
  7. 16. elements consist of only one type of atom
  8. 19. the combination of symbols and numbers that represent a compound
  9. 20. a type of mixture in which the individual substances are evenly mixed
Down
  1. 1. firm and stable in shape; not liquid or fluid.
  2. 2. the chemical formula for carbon dioxide
  3. 3. relating to chemistry, or the interactions of substances as studied in chemistry
  4. 6. has 8 protons
  5. 7. compounds are atoms of different elements
  6. 8. a substance that consists of just one type of atom
  7. 11. is a substance, but not an element
  8. 13. is a small particle that is a building block of matter
  9. 14. between metals and nonmetals on the periodic table
  10. 17. a type of substance containing atoms of two or more different elements chemically bonded together
  11. 18. 13 protons