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Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 111 · 40 questions
TalentJR

What you do (Yellow or red?): 1. Mix turmeric powder with a little water into a paste and paint it on white paper strips; let them dry. 2. Put a drop of soap solution on one strip and a drop of lemon juice on another. 3. Write down the colour each drop makes. 4. Add lemon juice to the reddish spot and watch it change back.

NameDateTime takenScore ___ / 40
  1. 1.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is kept the same. (a) False (b) True
  2. 2.🧺 Which of these is needed for the turmeric test? (a) water (b) a magnet (c) yeast (d) a comb
  3. 3.True or false: turmeric powder is not needed for the turmeric test. (a) False (b) True
  4. 4.🟡 Turmeric paper meets detergent water. What happens? (a) turns reddish-brown (b) stays yellow
  5. 5.True or false: white paper strips is needed for the turmeric test. (a) True (b) False
  6. 6.🛟 Which rule keeps the turmeric test safe? (a) sip each liquid (b) use only kitchen items (c) mix bathroom cleaners (d) sniff each bottle hard
  7. 7.True or false: orange juice is a base. (a) True (b) False
  8. 8.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the liquid we test”? (a) we keep it the same (b) we measure it (c) we change it
  9. 9.🫧 Which of these is an acid? (a) soap solution (b) sugar water (c) tamarind water (d) baking soda water
  10. 10.True or false: plain water is an acid. (a) True (b) False
  11. 11.🔍 Which is the odd one out? (a) baking soda water (b) detergent water (c) plain water (d) soap solution
  12. 12.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is the one thing we change. (a) False (b) True
  13. 13.True or false: salt water is a base. (a) True (b) False
  14. 14.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the turmeric paper”? (a) we keep it the same (b) we change it (c) we measure it
  15. 15.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the number of drops (b) the colour we see (c) the liquid we test (d) the turmeric paper
  16. 16.🫧 Is baking soda water an acid, a base or neutral? (a) a base (b) an acid (c) neutral
  17. 17.🫧 Is sugar water an acid, a base or neutral? (a) neutral (b) an acid (c) a base
  18. 18.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) white paper strips (b) lemon juice (c) a battery cell (d) turmeric powder
  19. 19.🫧 Is salt water an acid, a base or neutral? (a) a base (b) neutral (c) an acid
  20. 20.🟡 Turmeric paper meets sugar water. What happens? (a) stays yellow (b) turns reddish-brown
  21. 21.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the colour we see (b) the turmeric paper (c) the liquid we test
  22. 22.🧺 Do we need turmeric powder for the turmeric test? (a) not needed (b) needed
  23. 23.🫧 Which of these is a base? (a) orange juice (b) vinegar (c) baking soda water (d) tamarind water
  24. 24.🟡 Why does soap solution change turmeric’s colour? (a) soap is magnetic (b) soap is hot (c) soap water is a base (d) soap is an acid
  25. 25.True or false: vinegar keeps turmeric yellow. (a) False (b) True
  26. 26.True or false: water is not needed for the turmeric test. (a) True (b) False
  27. 27.True or false: a balloon is not needed for the turmeric test. (a) False (b) True
  28. 28.True or false: vinegar turns turmeric reddish-brown. (a) True (b) False
  29. 29.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) bright blue (b) green (c) reddish-brown (d) it stays white
  30. 30.🧺 Do we need a dropper or spoon for the turmeric test? (a) not needed (b) needed
  31. 31.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the light we look in is the one thing we change. (a) False (b) True
  32. 32.True or false: a dropper or spoon is not needed for the turmeric test. (a) True (b) False
  33. 33.True or false: a magnet is not needed for the turmeric test. (a) True (b) False
  34. 34.True or false: plain water is a base. (a) False (b) True
  35. 35.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is the one thing we change. (a) True (b) False
  36. 36.🟡 Which of these keeps turmeric yellow? (a) detergent water (b) soap solution (c) tamarind water (d) baking soda water
  37. 37.🧺 Which of these is needed for the turmeric test? (a) soap solution (b) yeast (c) a magnet (d) a mirror
  38. 38.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the light we look in is kept the same. (a) False (b) True
  39. 39.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is kept the same. (a) True (b) False
  40. 40.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) lemon juice (c) a dropper or spoon (d) a balloon

Answer key

  1. False
  2. water
  3. False
  4. turns reddish-brown
  5. True
  6. use only kitchen items
  7. False
  8. we change it
  9. tamarind water
  10. False
  11. plain water
  12. False
  13. False
  14. we keep it the same
  15. the colour we see
  16. a base
  17. neutral
  18. a battery cell
  19. neutral
  20. stays yellow
  21. the turmeric paper
  22. needed
  23. baking soda water
  24. soap water is a base
  25. True
  26. False
  27. True
  28. False
  29. reddish-brown
  30. needed
  31. False
  32. False
  33. True
  34. False
  35. True
  36. tamarind water
  37. soap solution
  38. True
  39. False
  40. a balloon

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