Matter and Energy Crossword

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Across
  1. 4. Substance that cannot be broken down into simpler parts and retain properties
  2. 5. Substance Matter with a fixed composition and definite properties
  3. 10. ability of a substance to burn
  4. 11. smallest unit of an element
  5. 13. firm and stable in shape;not liquid or fluid
  6. 14. uniform throughout
  7. 16. the resistance of a fluid to flow
  8. 17. mass per unit of volume
  9. 18. the ability to change or move matter
Down
  1. 1. a substance that flows freely but is of constant volume
  2. 2. smallest unit of a substance that behaves like the substance
  3. 3. ability of a substance to combine chemically with another substance
  4. 6. the study of matter and how it changes
  5. 7. not uniform throughout
  6. 8. anything that has mass and takes up space
  7. 9. substance made of atoms of more than one element bound together
  8. 12. an airlike fluid substance which expands freely to fill any space available
  9. 15. combinations of more than one pure substance