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Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 995 · 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 number of drops is kept the same. (a) True (b) False
  2. 2.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the light we look in (b) the turmeric paper (c) the colour we see (d) the liquid we test
  3. 3.🟡 Which of these turns turmeric paper reddish-brown? (a) vinegar (b) sugar water (c) soap solution (d) lemon juice
  4. 4.True or false: lemon juice is an acid. (a) True (b) False
  5. 5.🟡 Which of these keeps turmeric yellow? (a) baking soda water (b) plain water (c) soap solution (d) detergent water
  6. 6.🧺 Do we need white paper strips for the turmeric test? (a) not needed (b) needed
  7. 7.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the light we look in is the one thing we change. (a) True (b) False
  8. 8.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the turmeric paper”? (a) we measure it (b) we change it (c) we keep it the same
  9. 9.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it turns blue (b) it turns green (c) it stays yellow (d) reddish-brown
  10. 10.True or false: soap solution keeps turmeric yellow. (a) True (b) False
  11. 11.True or false: tamarind water is an acid. (a) False (b) True
  12. 12.🧺 Do we need a magnet for the turmeric test? (a) not needed (b) needed
  13. 13.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the number of drops”? (a) we measure it (b) we keep it the same (c) we change it
  14. 14.🧺 Do we need a dropper or spoon for the turmeric test? (a) not needed (b) needed
  15. 15.🟡 Turmeric paper meets lemon juice. What happens? (a) turns reddish-brown (b) stays yellow
  16. 16.True or false: white paper strips is needed for the turmeric test. (a) False (b) True
  17. 17.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a battery cell (b) soap solution (c) a dropper or spoon (d) lemon juice
  18. 18.🟡 Which of these turns turmeric reddish-brown? (a) tamarind water (b) plain water (c) soap solution (d) vinegar
  19. 19.True or false: lemon juice is not needed for the turmeric test. (a) False (b) True
  20. 20.True or false: turmeric powder is not needed for the turmeric test. (a) True (b) False
  21. 21.🫧 Is soap solution an acid, a base or neutral? (a) neutral (b) an acid (c) a base
  22. 22.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a dropper or spoon (b) water (c) white paper strips (d) a balloon
  23. 23.True or false: soap solution is needed for the turmeric test. (a) True (b) False
  24. 24.🧺 Do we need a balloon for the turmeric test? (a) needed (b) not needed
  25. 25.🔍 Which is the odd one out? (a) tamarind water (b) lemon juice (c) detergent water (d) plain water
  26. 26.🧺 Do we need soap solution for the turmeric test? (a) not needed (b) needed
  27. 27.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) green (b) bright blue (c) reddish-brown (d) it stays white
  28. 28.🫧 Which of these is neutral? (a) curd (b) baking soda water (c) sugar water (d) tamarind water
  29. 29.True or false: a battery cell is not needed for the turmeric test. (a) True (b) False
  30. 30.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) white paper strips (b) lemon juice (c) water (d) yeast
  31. 31.🧺 Which of these is needed for the turmeric test? (a) a mirror (b) white paper strips (c) a comb (d) a battery cell
  32. 32.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the light we look in (b) the turmeric paper (c) the liquid we test (d) the number of drops
  33. 33.🟡 Which of these turns turmeric reddish-brown? (a) vinegar (b) salt water (c) detergent water (d) plain water
  34. 34.🔍 Which is the odd one out? (a) detergent water (b) soap solution (c) tamarind water (d) baking soda water
  35. 35.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) a comb (c) white paper strips (d) a dropper or spoon
  36. 36.True or false: water is not needed for the turmeric test. (a) False (b) True
  37. 37.🔍 Which is the odd one out? (a) baking soda water (b) plain water (c) detergent water (d) soap solution
  38. 38.True or false: a magnet is not needed for the turmeric test. (a) False (b) True
  39. 39.True or false: white paper strips is not needed for the turmeric test. (a) True (b) False
  40. 40.True or false: detergent water is an acid. (a) True (b) False

Answer key

  1. True
  2. the colour we see
  3. soap solution
  4. True
  5. plain water
  6. needed
  7. False
  8. we keep it the same
  9. reddish-brown
  10. False
  11. True
  12. not needed
  13. we keep it the same
  14. needed
  15. stays yellow
  16. True
  17. a battery cell
  18. soap solution
  19. False
  20. False
  21. a base
  22. a balloon
  23. True
  24. not needed
  25. detergent water
  26. needed
  27. reddish-brown
  28. sugar water
  29. True
  30. yeast
  31. white paper strips
  32. the liquid we test
  33. detergent water
  34. tamarind water
  35. a comb
  36. False
  37. plain water
  38. True
  39. False
  40. False

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