physical and chemical crossword

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Across
  1. 4. breaking down food into starches when mixed with saliva.
  2. 7. chemical changes the substance's...
  3. 8. what, chemically, does the small intestine do?
  4. 10. how does saliva break down food?
  5. 13. when an object doesnt change into a new substance.
  6. 15. which of the intestines collects nutrients?
  7. 16. a physical change _______ change its identity.
  8. 17. is the small intestine physical or chemical?
  9. 18. which intestine is both physical and chemical?
Down
  1. 1. a chemical change _______ change its identity.
  2. 2. which intestine is only physical?
  3. 3. how do the teeth break down food?
  4. 5. what does the stomach do physically?
  5. 6. chemically breaking down food in the stomach.
  6. 9. out of the digestive system how many organs are both physical and chemical?
  7. 11. when an object changes its identity.
  8. 12. continual mixing of food in the small intestine.
  9. 14. what is the start of the digestive system and is both physical and chemical?
  10. 19. physically breaks down food with your teeth.