Chemical reactions

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Across
  1. 2. matter that can escape or enter
  2. 4. A solid that forms from liquid during a chemical reaction
  3. 5. change in form only
  4. 6. The Minimum amount of energy needed to start a chemical reaction
  5. 13. the amount of a substance in a given volume
  6. 16. Substances that undergo the chemical change
  7. 17. reaction where energy is absorbed
  8. 19. The cells in that contain thousands of biological catalysts
  9. 20. tells what happens in a chemical reaction
Down
  1. 1. occurs when compounds break down into simpler products
  2. 3. If two elements in different compounds trade places
  3. 7. The number placed in front of a chemical formula in a equation
  4. 8. Substances that forms in a chemical reaction
  5. 9. change that results in new products
  6. 10. When two or more elements or compounds combine to make a more complex substance
  7. 11. Describes the rate of a chemical change reaction
  8. 12. of conservation of mass
  9. 14. reaction where energy is released
  10. 15. matter that dose not leave or enter
  11. 18. Increases the reaction rate