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Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 466 · 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.True or false: a battery cell is not needed for the turmeric test. (a) True (b) False
  2. 2.🧺 Which of these is needed for the turmeric test? (a) a magnet (b) water (c) a comb (d) yeast
  3. 3.True or false: detergent water keeps turmeric yellow. (a) True (b) False
  4. 4.⚖️ 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 change it (c) we measure it
  5. 5.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the colour we see”? (a) we keep it the same (b) we change it (c) we measure it
  6. 6.⚖️ 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
  7. 7.🫧 Is curd an acid, a base or neutral? (a) neutral (b) a base (c) an acid
  8. 8.🟡 Which of these turns turmeric paper reddish-brown? (a) soap solution (b) vinegar (c) lemon juice (d) sugar water
  9. 9.🟡 Which of these turns turmeric reddish-brown? (a) detergent water (b) lemon juice (c) salt water (d) plain water
  10. 10.True or false: a magnet is not needed for the turmeric test. (a) True (b) False
  11. 11.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns blue (b) it turns red (c) it turns black (d) it stays yellow
  12. 12.⚖️ 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
  13. 13.🫧 Which of these is a base? (a) curd (b) vinegar (c) tamarind water (d) detergent water
  14. 14.True or false: tamarind water keeps turmeric yellow. (a) True (b) False
  15. 15.True or false: curd is an acid. (a) False (b) True
  16. 16.🟡 Which of these keeps turmeric yellow? (a) baking soda water (b) soap solution (c) sugar water (d) detergent water
  17. 17.🫧 Is salt water an acid, a base or neutral? (a) a base (b) neutral (c) an acid
  18. 18.⚖️ 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
  19. 19.🧺 Do we need lemon juice for the turmeric test? (a) not needed (b) needed
  20. 20.🛟 Which rule keeps the turmeric test safe? (a) sniff each bottle hard (b) mix bathroom cleaners (c) use only kitchen items (d) sip each liquid
  21. 21.🫧 Which of these is an acid? (a) detergent water (b) baking soda water (c) orange juice (d) plain water
  22. 22.🟡 Turmeric paper meets tamarind water. What happens? (a) turns reddish-brown (b) stays yellow
  23. 23.True or false: plain water is a base. (a) False (b) True
  24. 24.🍋 A drop of lemon juice falls on turmeric paper. What happens? (a) it stays yellow (b) it turns red (c) it turns blue (d) it turns black
  25. 25.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) a dropper or spoon (c) yeast (d) white paper strips
  26. 26.🫧 Is detergent water an acid, a base or neutral? (a) an acid (b) a base (c) neutral
  27. 27.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it turns blue (b) it stays yellow (c) it turns green (d) reddish-brown
  28. 28.True or false: salt water is neutral. (a) False (b) True
  29. 29.🧺 Do we need soap solution for the turmeric test? (a) not needed (b) needed
  30. 30.🧺 Which of these is not needed for the turmeric test? (a) a dropper or spoon (b) turmeric powder (c) a balloon (d) water
  31. 31.True or false: soap solution is an acid. (a) True (b) False
  32. 32.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is the one thing we change. (a) False (b) True
  33. 33.🧺 Which of these is needed for the turmeric test? (a) turmeric powder (b) a balloon (c) a comb (d) a mirror
  34. 34.🫧 Is orange juice an acid, a base or neutral? (a) neutral (b) a base (c) an acid
  35. 35.🟡 Which of these turns turmeric reddish-brown? (a) soap solution (b) plain water (c) sugar water (d) tamarind water
  36. 36.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) bright blue (b) green (c) it stays white (d) reddish-brown
  37. 37.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the liquid we test (b) the light we look in (c) the colour we see
  38. 38.🟡 Turmeric paper meets lemon juice. What happens? (a) stays yellow (b) turns reddish-brown
  39. 39.🧺 Do we need a comb for the turmeric test? (a) needed (b) not needed
  40. 40.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) a balloon (c) soap solution (d) white paper strips

Answer key

  1. True
  2. water
  3. False
  4. we change it
  5. we measure it
  6. we keep it the same
  7. an acid
  8. soap solution
  9. detergent water
  10. True
  11. it stays yellow
  12. we keep it the same
  13. detergent water
  14. True
  15. True
  16. sugar water
  17. neutral
  18. we keep it the same
  19. needed
  20. use only kitchen items
  21. orange juice
  22. stays yellow
  23. False
  24. it stays yellow
  25. yeast
  26. a base
  27. reddish-brown
  28. True
  29. needed
  30. a balloon
  31. False
  32. True
  33. turmeric powder
  34. an acid
  35. soap solution
  36. reddish-brown
  37. the light we look in
  38. stays yellow
  39. not needed
  40. a balloon

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