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Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 214 · 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? What do we do with “the light we look in”? (a) we measure it (b) we keep it the same (c) we change it
  2. 2.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the liquid we test (b) the colour we see (c) the turmeric paper
  3. 3.🟡 Turmeric paper meets tamarind water. What happens? (a) stays yellow (b) turns reddish-brown
  4. 4.🛟 Turmeric stains clothes. What should you wear? (a) your best clothes (b) an old shirt or apron (c) a white party dress (d) your school uniform
  5. 5.True or false: soap solution is needed for the turmeric test. (a) False (b) True
  6. 6.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) reddish-brown (b) it turns green (c) it stays yellow (d) it turns blue
  7. 7.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is the one thing we change. (a) True (b) False
  8. 8.True or false: lemon juice keeps turmeric yellow. (a) False (b) True
  9. 9.🫧 Is lemon juice an acid, a base or neutral? (a) a base (b) an acid (c) neutral
  10. 10.True or false: a battery cell is needed for the turmeric test. (a) True (b) False
  11. 11.🟡 Turmeric paper meets sugar water. What happens? (a) turns reddish-brown (b) stays yellow
  12. 12.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is what we measure. (a) False (b) True
  13. 13.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) turmeric powder (c) a balloon (d) lemon juice
  14. 14.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a battery cell (b) lemon juice (c) a dropper or spoon (d) turmeric powder
  15. 15.True or false: yeast is not needed for the turmeric test. (a) True (b) False
  16. 16.True or false: baking soda water is a base. (a) True (b) False
  17. 17.🟡 Turmeric paper meets salt water. What happens? (a) stays yellow (b) turns reddish-brown
  18. 18.True or false: a dropper or spoon is needed for the turmeric test. (a) True (b) False
  19. 19.🧺 Do we need a battery cell for the turmeric test? (a) not needed (b) needed
  20. 20.🟡 Which of these turns turmeric reddish-brown? (a) salt water (b) detergent water (c) sugar water (d) vinegar
  21. 21.True or false: soap solution is not needed for the turmeric test. (a) True (b) False
  22. 22.🛟 Which rule keeps the turmeric test safe? (a) use only kitchen items (b) mix bathroom cleaners (c) sip each liquid (d) sniff each bottle hard
  23. 23.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is kept the same. (a) False (b) True
  24. 24.🫧 Is baking soda water an acid, a base or neutral? (a) an acid (b) neutral (c) a base
  25. 25.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) it stays white (b) bright blue (c) reddish-brown (d) green
  26. 26.🟡 Turmeric paper meets baking soda water. What happens? (a) stays yellow (b) turns reddish-brown
  27. 27.🧺 Do we need a comb for the turmeric test? (a) needed (b) not needed
  28. 28.🧺 Which of these is needed for the turmeric test? (a) a comb (b) a magnet (c) a battery cell (d) soap solution
  29. 29.🔍 Which is the odd one out? (a) detergent water (b) baking soda water (c) soap solution (d) sugar water
  30. 30.True or false: orange juice is an acid. (a) True (b) False
  31. 31.🔍 Which is the odd one out? (a) baking soda water (b) detergent water (c) soap solution (d) salt water
  32. 32.🟡 Turmeric paper meets detergent water. What happens? (a) stays yellow (b) turns reddish-brown
  33. 33.True or false: tamarind water is a base. (a) False (b) True
  34. 34.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) yeast (c) water (d) soap solution
  35. 35.🧺 Which of these is not needed for the turmeric test? (a) soap solution (b) a dropper or spoon (c) lemon juice (d) a battery cell
  36. 36.🔍 Which is the odd one out? (a) plain water (b) baking soda water (c) detergent water (d) soap solution
  37. 37.🟡 Which of these keeps turmeric yellow? (a) soap solution (b) baking soda water (c) detergent water (d) tamarind water
  38. 38.🧺 Which of these is needed for the turmeric test? (a) a dropper or spoon (b) a mirror (c) a magnet (d) yeast
  39. 39.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) white paper strips (b) water (c) turmeric powder (d) a mirror
  40. 40.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the number of drops (b) the light we look in (c) the turmeric paper (d) the colour we see

Answer key

  1. we keep it the same
  2. the turmeric paper
  3. stays yellow
  4. an old shirt or apron
  5. True
  6. reddish-brown
  7. False
  8. True
  9. an acid
  10. False
  11. stays yellow
  12. False
  13. a balloon
  14. a battery cell
  15. True
  16. True
  17. stays yellow
  18. True
  19. not needed
  20. detergent water
  21. False
  22. use only kitchen items
  23. True
  24. a base
  25. reddish-brown
  26. turns reddish-brown
  27. not needed
  28. soap solution
  29. sugar water
  30. True
  31. salt water
  32. turns reddish-brown
  33. False
  34. yeast
  35. a battery cell
  36. plain water
  37. tamarind water
  38. a dropper or spoon
  39. a mirror
  40. the colour we see

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