Matter matters

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Across
  1. 4. purest form of matter
  2. 6. has mass and takes up space
  3. 7. the way a substance reacts with others to form new substances with different properties
  4. 9. have a fixed, uniform composition
  5. 10. a mixture that that separates into different layers when it is no longer agitated
  6. 12. particles can be seen in a beam of light
  7. 13. two atoms
  8. 19. mixture of 2 or more substances mixed so thoroughly that it is tough to tell them apart
  9. 20. a characteristic of a substance that can be observed or measured without changing the composition of that substance
  10. 22. made up of two or more elements and can be broken down into these elements.
Down
  1. 1. the parts are evely mixed (brass, steel, air)
  2. 2. the change of a substance from a liquid to a gas
  3. 3. mixture made up of 2 or more substances that are notably different from each other
  4. 5. substances that cannot be broken down into simpler substances example gold and lead
  5. 8. without a change in composition (density, malleability, color)
  6. 11. represents how many atoms of each element in a compound
  7. 14. occurs when a substance changes composition by forming one or more new substances
  8. 15. the tiny particles that make up all matter
  9. 16. changing a liquid to a gas or vapour
  10. 17. point the temperature at which a solid becomes a liquid
  11. 18. use of filter paper or fine porous ceramic to separate a solid from a liquid
  12. 21. the substance(gas, liquid or solid) dissolves in the liquid to form a solution