Matter and its Changes

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Across
  1. 3. when the leaves change colors
  2. 7. formation of a new substance is a sign of _____
  3. 12. colorful display on 4th of July
  4. 13. tube of glowing color
  5. 14. extraction of minerals
  6. 15. to keep, preserve
  7. 17. chemicals combine wih metal in rocks forming _____
  8. 18. to uncover
  9. 19. the process of a solid to a liquid
Down
  1. 1. melting ice is an example of ______
  2. 2. a mixture of chemicals
  3. 4. used to time a reaction
  4. 5. made up of many sugar molecules surrounded by molecules of water
  5. 6. cutting the grass cannot be ______
  6. 7. solid to liquid, liquid to gas
  7. 8. sugar crystals dissolve because they are _____ in water
  8. 9. used to retrieve metals
  9. 10. the process of a liquid to a gas
  10. 11. a scientist muppet
  11. 16. something with a definite shape and volume