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Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 461 · 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 what we measure. (a) True (b) False
  2. 2.🟡 Which of these keeps turmeric yellow? (a) tamarind water (b) detergent water (c) soap solution (d) baking soda water
  3. 3.🧺 Which of these is needed for the turmeric test? (a) a comb (b) a balloon (c) turmeric powder (d) a battery cell
  4. 4.True or false: vinegar is a base. (a) False (b) True
  5. 5.🫧 Which of these is an acid? (a) vinegar (b) plain water (c) salt water (d) baking soda water
  6. 6.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it turns green (b) it stays yellow (c) it turns blue (d) reddish-brown
  7. 7.⚖️ 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
  8. 8.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) turmeric powder (c) white paper strips (d) a magnet
  9. 9.True or false: baking soda water is an acid. (a) True (b) False
  10. 10.⚖️ 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 number of drops (c) the turmeric paper (d) the liquid we test
  11. 11.True or false: salt water keeps turmeric yellow. (a) True (b) False
  12. 12.True or false: vinegar turns turmeric reddish-brown. (a) False (b) True
  13. 13.⚖️ 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
  14. 14.🔍 Which is the odd one out? (a) baking soda water (b) detergent water (c) soap solution (d) vinegar
  15. 15.🍋 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
  16. 16.True or false: curd is a base. (a) True (b) False
  17. 17.🟡 Turmeric paper meets baking soda water. What happens? (a) stays yellow (b) turns reddish-brown
  18. 18.🔍 Which is the odd one out? (a) soap solution (b) plain water (c) salt water (d) tamarind water
  19. 19.True or false: soap solution is needed for the turmeric test. (a) False (b) True
  20. 20.⚖️ 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
  21. 21.🫧 Which of these is a base? (a) tamarind water (b) vinegar (c) sugar water (d) baking soda water
  22. 22.🟡 Which of these keeps turmeric yellow? (a) baking soda water (b) soap solution (c) detergent water (d) salt water
  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.🧺 Do we need lemon juice for the turmeric test? (a) not needed (b) needed
  25. 25.True or false: lemon juice is an acid. (a) False (b) True
  26. 26.🧺 Which of these is needed for the turmeric test? (a) white paper strips (b) a mirror (c) a balloon (d) a magnet
  27. 27.🧺 Which of these is not needed for the turmeric test? (a) turmeric powder (b) white paper strips (c) soap solution (d) a comb
  28. 28.🧺 Which of these is needed for the turmeric test? (a) yeast (b) a mirror (c) water (d) a magnet
  29. 29.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the light we look in”? (a) we keep it the same (b) we measure it (c) we change it
  30. 30.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is kept the same. (a) True (b) False
  31. 31.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a dropper or spoon (b) soap solution (c) white paper strips (d) yeast
  32. 32.True or false: a magnet is needed for the turmeric test. (a) True (b) False
  33. 33.🟡 Which of these keeps turmeric yellow? (a) sugar water (b) detergent water (c) baking soda water (d) soap solution
  34. 34.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns red (b) it turns black (c) it stays yellow (d) it turns blue
  35. 35.🟡 Turmeric paper meets sugar water. What happens? (a) turns reddish-brown (b) stays yellow
  36. 36.🛟 Which rule keeps the turmeric test safe? (a) sniff each bottle hard (b) sip each liquid (c) use only kitchen items (d) mix bathroom cleaners
  37. 37.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) reddish-brown (b) bright blue (c) it stays white (d) green
  38. 38.True or false: detergent water keeps turmeric yellow. (a) False (b) True
  39. 39.True or false: soap solution keeps turmeric yellow. (a) True (b) False
  40. 40.True or false: sugar water keeps turmeric yellow. (a) False (b) True

Answer key

  1. False
  2. tamarind water
  3. turmeric powder
  4. False
  5. vinegar
  6. reddish-brown
  7. the number of drops
  8. a magnet
  9. False
  10. the liquid we test
  11. True
  12. False
  13. we change it
  14. vinegar
  15. it stays yellow
  16. False
  17. turns reddish-brown
  18. soap solution
  19. True
  20. we keep it the same
  21. baking soda water
  22. salt water
  23. True
  24. needed
  25. True
  26. white paper strips
  27. a comb
  28. water
  29. we keep it the same
  30. True
  31. yeast
  32. False
  33. sugar water
  34. it stays yellow
  35. stays yellow
  36. use only kitchen items
  37. reddish-brown
  38. False
  39. False
  40. True

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