Compounds, Elements, Mixtures

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Across
  1. 3. H20
  2. 7. chemically combined elements
  3. 8. physically combined elements or compounds
  4. 9. a collection of the same atom
  5. 10. NaCl
Down
  1. 1. On the periodic table it has the letter C
  2. 2. Has all of the elements on there
  3. 4. Basic building block
  4. 5. Has the letter O on the periodic table
  5. 6. Anything that takes up space