Tic- Tac- Toe activity- science

123456789101112131415161718
Across
  1. 2. reaction a process in which one or more ubstances are converted to one or more different substances.
  2. 3. substance that is uniform throughout
  3. 4. the identity does change
  4. 6. anything that has mass and volume
  5. 7. change the identity doesn't change
  6. 13. particles in it only vibrate
  7. 14. most common in the universe
  8. 15. the aount of matter in a substance
  9. 17. the transition of a substance directly from the solid to the gas phase
  10. 18. a substance that only has one type of atom
Down
  1. 1. the process at which a liquid tunrs into a gas
  2. 2. two or more elements chemically combined
  3. 5. the amount of mass in a substance
  4. 6. two or more substances not cheically combined
  5. 8. particles move faster than those in a solid.
  6. 9. substance that is not niform throughout
  7. 10. to cause something to become separated by a chemical process
  8. 11. particles in it move very fast
  9. 12. how much space an object takes up
  10. 16. matter that is uniform and has a definite composition.