Levi's water and ecosystems crosswordpuzzle

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Across
  1. 3. a mixture containing small undissolved particles that do not settle out
  2. 8. smallest unit of matter, the basic building blocks of matter
  3. 9. A pure substance made of only one kind of atom
  4. 11. a mixture in which substances are not evenly mixed
  5. 12. definite shape, definite volume, not compressible, high density
  6. 13. a homogeneous mixture of 2 or more substances
Down
  1. 1. A mixture in which substances are evenly distributed throughout the mixture
  2. 2. A homogeneous mixture
  3. 4. Grouping of 2 or more substances that do not chemically combine
  4. 5. A substance made of 2 or more different elements chemically in a set ratio
  5. 6. The study of properties of matter and how matter changes
  6. 7. Indefinite shape, definite volume, not compressible, less dense than solids. Who am I?
  7. 10. Anything that has mass and takes up space