Unit 4 matter

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Across
  1. 5. gas to liquid
  2. 6. Changing from a liquid to a gas
  3. 7. the smallest unit of a chemical element
  4. 10. amount of space an object takes up
  5. 11. 2 or more substances mixed together not chemical
  6. 13. Liquid becomes a solid
  7. 16. how easy it is for a substance to burn
  8. 18. when 2 or more elements change to a new one
Down
  1. 1. temperature when substance goes liquid-gas
  2. 2. branch of science studying substances
  3. 3. anything that has mass and takes up space
  4. 4. measure of compactness of particles in material
  5. 5. heterogenius mix particles do not settle
  6. 8. change from solid to a liquid
  7. 9. phase change liquid to gas from heat energy
  8. 12. scattering beam of light by parts in colloid
  9. 14. what happens when things rust
  10. 15. degree of reflectiveness of a mineral
  11. 17. the amount of matter in an object