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Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 765 · 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.🟡 Which of these turns turmeric reddish-brown? (a) lemon juice (b) baking soda water (c) vinegar (d) tamarind water
  2. 2.🧺 Which of these is not needed for the turmeric test? (a) lemon juice (b) white paper strips (c) soap solution (d) a comb
  3. 3.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is kept the same. (a) True (b) False
  4. 4.🧺 Do we need lemon juice for the turmeric test? (a) needed (b) not needed
  5. 5.🔍 Which is the odd one out? (a) salt water (b) vinegar (c) baking soda water (d) tamarind water
  6. 6.True or false: detergent water turns turmeric reddish-brown. (a) False (b) True
  7. 7.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it turns green (b) reddish-brown (c) it turns blue (d) it stays yellow
  8. 8.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) a mirror (c) soap solution (d) water
  9. 9.🫧 Which of these is an acid? (a) plain water (b) baking soda water (c) orange juice (d) soap solution
  10. 10.True or false: plain water keeps turmeric yellow. (a) True (b) False
  11. 11.True or false: baking soda water is an acid. (a) True (b) False
  12. 12.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) a magnet (c) white paper strips (d) lemon juice
  13. 13.True or false: a balloon is needed for the turmeric test. (a) False (b) True
  14. 14.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) yeast (c) soap solution (d) turmeric powder
  15. 15.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is the one thing we change. (a) True (b) False
  16. 16.🟡 Which of these turns turmeric reddish-brown? (a) soap solution (b) plain water (c) vinegar (d) salt water
  17. 17.🟡 Turmeric paper meets vinegar. What happens? (a) stays yellow (b) turns reddish-brown
  18. 18.🛟 Which rule keeps the turmeric test safe? (a) sniff each bottle hard (b) use only kitchen items (c) mix bathroom cleaners (d) sip each liquid
  19. 19.🟡 Which of these keeps turmeric yellow? (a) baking soda water (b) detergent water (c) vinegar (d) soap solution
  20. 20.⚖️ 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
  21. 21.🫧 Which of these is an acid? (a) salt water (b) sugar water (c) vinegar (d) plain water
  22. 22.🟡 Which of these keeps turmeric yellow? (a) detergent water (b) lemon juice (c) baking soda water (d) soap solution
  23. 23.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) turmeric powder (c) water (d) a comb
  24. 24.🫧 Which of these is neutral? (a) baking soda water (b) sugar water (c) curd (d) lemon juice
  25. 25.🧺 Which of these is not needed for the turmeric test? (a) soap solution (b) lemon juice (c) turmeric powder (d) a mirror
  26. 26.🧺 Which of these is not needed for the turmeric test? (a) a dropper or spoon (b) yeast (c) white paper strips (d) water
  27. 27.True or false: lemon juice is an acid. (a) True (b) False
  28. 28.True or false: sugar water is neutral. (a) False (b) True
  29. 29.🟡 Which of these keeps turmeric yellow? (a) soap solution (b) baking soda water (c) detergent water (d) sugar water
  30. 30.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the turmeric paper (b) the colour we see (c) the liquid we test (d) the light we look in
  31. 31.🔍 Which is the odd one out? (a) plain water (b) lemon juice (c) detergent water (d) sugar water
  32. 32.🧺 Which of these is needed for the turmeric test? (a) a mirror (b) a balloon (c) lemon juice (d) a magnet
  33. 33.True or false: a dropper or spoon is needed for the turmeric test. (a) False (b) True
  34. 34.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) lemon juice (c) water (d) a balloon
  35. 35.🧺 Which of these is needed for the turmeric test? (a) a comb (b) a balloon (c) a mirror (d) water
  36. 36.True or false: detergent water keeps turmeric yellow. (a) False (b) True
  37. 37.🫧 Is detergent water an acid, a base or neutral? (a) neutral (b) an acid (c) a base
  38. 38.🫧 Which of these is neutral? (a) lemon juice (b) tamarind water (c) salt water (d) soap solution
  39. 39.🛟 Turmeric stains clothes. What should you wear? (a) your school uniform (b) your best clothes (c) an old shirt or apron (d) a white party dress
  40. 40.🧺 Which of these is needed for the turmeric test? (a) white paper strips (b) a battery cell (c) a balloon (d) a comb

Answer key

  1. baking soda water
  2. a comb
  3. False
  4. needed
  5. baking soda water
  6. True
  7. reddish-brown
  8. a mirror
  9. orange juice
  10. True
  11. False
  12. a magnet
  13. False
  14. yeast
  15. False
  16. soap solution
  17. stays yellow
  18. use only kitchen items
  19. vinegar
  20. we keep it the same
  21. vinegar
  22. lemon juice
  23. a comb
  24. sugar water
  25. a mirror
  26. yeast
  27. True
  28. True
  29. sugar water
  30. the colour we see
  31. detergent water
  32. lemon juice
  33. True
  34. a balloon
  35. water
  36. False
  37. a base
  38. salt water
  39. an old shirt or apron
  40. white paper strips

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