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Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 829 · 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 turmeric paper”? (a) we measure it (b) we change it (c) we keep it the same
  2. 2.True or false: orange juice is an acid. (a) True (b) False
  3. 3.True or false: a comb is not needed for the turmeric test. (a) True (b) False
  4. 4.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is what we measure. (a) True (b) False
  5. 5.True or false: a mirror is not needed for the turmeric test. (a) False (b) True
  6. 6.True or false: sugar water turns turmeric reddish-brown. (a) False (b) True
  7. 7.True or false: a magnet is not needed for the turmeric test. (a) True (b) False
  8. 8.🟡 Turmeric paper meets plain water. What happens? (a) stays yellow (b) turns reddish-brown
  9. 9.🔍 Which is the odd one out? (a) detergent water (b) baking soda water (c) tamarind water (d) soap solution
  10. 10.🟡 Which of these keeps turmeric yellow? (a) baking soda water (b) soap solution (c) plain water (d) detergent water
  11. 11.🧺 Do we need turmeric powder for the turmeric test? (a) needed (b) not needed
  12. 12.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) bright blue (b) white at once (c) green (d) reddish
  13. 13.True or false: soap solution turns turmeric reddish-brown. (a) False (b) True
  14. 14.True or false: salt water turns turmeric reddish-brown. (a) True (b) False
  15. 15.⚖️ 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 change it (c) we keep it the same
  16. 16.True or false: lemon juice is a base. (a) True (b) False
  17. 17.🛟 Turmeric stains clothes. What should you wear? (a) your best clothes (b) a white party dress (c) an old shirt or apron (d) your school uniform
  18. 18.🔍 Which is the odd one out? (a) lemon juice (b) vinegar (c) sugar water (d) detergent water
  19. 19.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) soap solution (c) white paper strips (d) a mirror
  20. 20.🟡 Which of these keeps turmeric yellow? (a) detergent water (b) soap solution (c) baking soda water (d) vinegar
  21. 21.True or false: water is not needed for the turmeric test. (a) True (b) False
  22. 22.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it turns green (b) reddish-brown (c) it stays yellow (d) it turns blue
  23. 23.🫧 Which of these is an acid? (a) plain water (b) salt water (c) tamarind water (d) sugar water
  24. 24.🍋 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
  25. 25.True or false: soap solution is needed for the turmeric test. (a) False (b) True
  26. 26.🧺 Do we need a magnet for the turmeric test? (a) needed (b) not needed
  27. 27.🫧 Which of these is neutral? (a) vinegar (b) detergent water (c) lemon juice (d) salt water
  28. 28.🧺 Which of these is needed for the turmeric test? (a) a mirror (b) yeast (c) turmeric powder (d) a comb
  29. 29.🟡 Turmeric paper meets detergent water. What happens? (a) stays yellow (b) turns reddish-brown
  30. 30.True or false: turmeric powder is needed for the turmeric test. (a) True (b) False
  31. 31.🧺 Which of these is needed for the turmeric test? (a) a mirror (b) a magnet (c) white paper strips (d) a balloon
  32. 32.🧺 Do we need lemon juice for the turmeric test? (a) needed (b) not needed
  33. 33.🔍 Which is the odd one out? (a) plain water (b) vinegar (c) salt water (d) soap solution
  34. 34.🔍 Which is the odd one out? (a) detergent water (b) soap solution (c) sugar water (d) baking soda water
  35. 35.🧺 Do we need water for the turmeric test? (a) needed (b) not needed
  36. 36.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) a balloon (c) soap solution (d) a dropper or spoon
  37. 37.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns black (b) it turns red (c) it turns blue (d) it stays yellow
  38. 38.True or false: white paper strips is not needed for the turmeric test. (a) False (b) True
  39. 39.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) a comb (c) lemon juice (d) soap solution
  40. 40.⚖️ 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

Answer key

  1. we keep it the same
  2. True
  3. True
  4. True
  5. True
  6. False
  7. True
  8. stays yellow
  9. tamarind water
  10. plain water
  11. needed
  12. reddish
  13. True
  14. False
  15. we keep it the same
  16. False
  17. an old shirt or apron
  18. detergent water
  19. a mirror
  20. vinegar
  21. False
  22. reddish-brown
  23. tamarind water
  24. it turns yellow again
  25. True
  26. not needed
  27. salt water
  28. turmeric powder
  29. turns reddish-brown
  30. True
  31. white paper strips
  32. needed
  33. soap solution
  34. sugar water
  35. needed
  36. a balloon
  37. it stays yellow
  38. False
  39. a comb
  40. the turmeric paper

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