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Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 28 · 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.

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

Answer key

  1. a mirror
  2. it turns yellow again
  3. an acid
  4. True
  5. the colour we see
  6. a comb
  7. False
  8. soap solution
  9. it stays yellow
  10. stays yellow
  11. a balloon
  12. we keep it the same
  13. not needed
  14. the number of drops
  15. a magnet
  16. vinegar
  17. a comb
  18. True
  19. water
  20. a balloon
  21. True
  22. stays yellow
  23. use only kitchen items
  24. True
  25. stays yellow
  26. plain water
  27. needed
  28. True
  29. True
  30. False
  31. we keep it the same
  32. not needed
  33. stays yellow
  34. it stays yellow
  35. soap solution
  36. curd
  37. salt water
  38. detergent water
  39. False
  40. a battery cell

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