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Physical & Chemical Changes in Digestion

Quiz by AMY BURCHETT

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25 questions
Show answers
  • Q1
    acid in stomach, bonds being broken, amylase in saliva, enzymes involved
    chemical changes in digestion
    30s
  • Q2
    A new substance is produced (formed)
    main sign that a chemical changes has occured
    30s
  • Q3
    color change, gas produced, light produced, temp. change, precipitate
    5 signs a chemical change occured
    30s
  • Q4
    the reason large molecules are broken into small molecules
    to fit in blood
    30s
  • Q5
    The organ system that digests food to provide you with nutrients
    Digestive System
    30s
  • Q6
    Moving/pushing food through your body (happens in the esophagus and large and small intestine)
    Peristalsis
    30s
  • Q7
    Mechanical, Radiant, Sound, Chemical, Electrical, Nuclear, Thermal
    energy forms
    30s
  • Q8
    What do digestive enzymes do to proteins in the digestive system?
    Enzymes CONVERT proteins into digestive acids
    Enzymes break proteins down into amino acids
    Enzymes bind proteins together so they become MORE complex
    Enzymes transform proteins into fat
    60s
  • Q9
    Which of the following is the best evidence that digestion involves chemical changes?
    The product's mass equals the reactants' mass
    Time is required to accomplish results
    New substance produced
    Different compounds are involved
    60s
  • Q10
    Which of the following is an example of a PHYSICAL change but NOT a chemical change?
    Hydrochloric acid in the stomach breaks the bond between amino acids
    Teeth break food into smaller particles
    A juice released by the pancreas neutralizes stomach acid as the digesting material moves into the small intestine
    Salivary amylase breaks bonds into starch, releasing simple sugars
    60s
  • Q11
    Which digestive process listed below is best classified as a physical change?
    Enzymes in the stomach break down proteins into smaller fragments
    Bacteria converting lactose into simple sugars in the intestines
    Starch from crackers is converted to simple sugars through the action of enzymes in saliva
    Teeth grinding a pickle into smaller pieces in the mouth
    60s
  • Q12
    Which of the following is a physical AND chemical change?
    Large intestine removing water from food
    Pushing food from esophagus to stomach
    Chewing food while enzymes in saliva break bonds of food
    Nutrients being absorbed into bloodstream
    60s
  • Q13
    What type of changes take place in your mouth when you chew food?
    Chemical during the entire process only
    Physical when food is cut and ground and chemical when food is mixed with saliva
    Chemical when food is cut and ground and physical when food is mixed with saliva
    Physical during the entire process only
    60s
  • Q14
    When something changes in shape or size or is moved to a different location
    Physical Change
    Chemical Change
    30s
  • Q15
    When the bonds of a molecule or compound are broken
    Physical Change
    Chemical Change
    30s

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