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Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 901 · 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 keeps turmeric yellow? (a) tamarind water (b) detergent water (c) baking soda water (d) soap solution
  2. 2.🧺 Which of these is not needed for the turmeric test? (a) a dropper or spoon (b) turmeric powder (c) water (d) yeast
  3. 3.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the light we look in (b) the liquid we test (c) the colour we see (d) the number of drops
  4. 4.🫧 Which of these is neutral? (a) curd (b) detergent water (c) baking soda water (d) sugar water
  5. 5.True or false: soap solution is a base. (a) False (b) True
  6. 6.🟡 Turmeric paper meets plain water. What happens? (a) turns reddish-brown (b) stays yellow
  7. 7.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is the one thing we change. (a) True (b) False
  8. 8.🧺 Do we need white paper strips for the turmeric test? (a) not needed (b) needed
  9. 9.🧺 Which of these is needed for the turmeric test? (a) a dropper or spoon (b) a balloon (c) a magnet (d) a comb
  10. 10.🧺 Which of these is needed for the turmeric test? (a) yeast (b) soap solution (c) a mirror (d) a battery cell
  11. 11.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the colour we see (b) the turmeric paper (c) the number of drops (d) the liquid we test
  12. 12.🟡 Which of these turns turmeric reddish-brown? (a) salt water (b) lemon juice (c) vinegar (d) soap solution
  13. 13.True or false: lemon juice is a base. (a) False (b) True
  14. 14.🫧 Is baking soda water an acid, a base or neutral? (a) a base (b) neutral (c) an acid
  15. 15.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) reddish-brown (b) it turns blue (c) it stays yellow (d) it turns green
  16. 16.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) yeast (b) a dropper or spoon (c) lemon juice (d) soap solution
  17. 17.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) water (c) a comb (d) a dropper or spoon
  18. 18.🛟 Which rule keeps the turmeric test safe? (a) sip each liquid (b) sniff each bottle hard (c) mix bathroom cleaners (d) use only kitchen items
  19. 19.🧺 Do we need a comb for the turmeric test? (a) needed (b) not needed
  20. 20.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the liquid we test”? (a) we measure it (b) we keep it the same (c) we change it
  21. 21.True or false: yeast is needed for the turmeric test. (a) True (b) False
  22. 22.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) white paper strips (b) turmeric powder (c) a mirror (d) water
  23. 23.🔍 Which is the odd one out? (a) baking soda water (b) soap solution (c) tamarind water (d) detergent water
  24. 24.True or false: curd is a base. (a) False (b) True
  25. 25.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the colour we see”? (a) we change it (b) we keep it the same (c) we measure it
  26. 26.True or false: turmeric powder is needed for the turmeric test. (a) False (b) True
  27. 27.🫧 Is plain water an acid, a base or neutral? (a) an acid (b) neutral (c) a base
  28. 28.🛟 Turmeric stains clothes. What should you wear? (a) a white party dress (b) your best clothes (c) an old shirt or apron (d) your school uniform
  29. 29.🧺 Which of these is needed for the turmeric test? (a) a comb (b) turmeric powder (c) a battery cell (d) a magnet
  30. 30.🟡 Turmeric paper meets lemon juice. What happens? (a) turns reddish-brown (b) stays yellow
  31. 31.⚖️ 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 number of drops
  32. 32.🟡 Which of these turns turmeric reddish-brown? (a) plain water (b) lemon juice (c) sugar water (d) detergent water
  33. 33.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) white paper strips (b) water (c) a magnet (d) turmeric powder
  34. 34.🫧 Which of these is a base? (a) tamarind water (b) detergent water (c) plain water (d) salt water
  35. 35.True or false: baking soda water is a base. (a) False (b) True
  36. 36.True or false: detergent water is an acid. (a) False (b) True
  37. 37.True or false: salt water turns turmeric reddish-brown. (a) True (b) False
  38. 38.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is kept the same. (a) True (b) False
  39. 39.🫧 Which of these is an acid? (a) vinegar (b) plain water (c) detergent water (d) salt water
  40. 40.True or false: sugar water is neutral. (a) True (b) False

Answer key

  1. tamarind water
  2. yeast
  3. the colour we see
  4. sugar water
  5. True
  6. stays yellow
  7. True
  8. needed
  9. a dropper or spoon
  10. soap solution
  11. the liquid we test
  12. soap solution
  13. False
  14. a base
  15. reddish-brown
  16. yeast
  17. a comb
  18. use only kitchen items
  19. not needed
  20. we change it
  21. False
  22. a mirror
  23. tamarind water
  24. False
  25. we measure it
  26. True
  27. neutral
  28. an old shirt or apron
  29. turmeric powder
  30. stays yellow
  31. the number of drops
  32. detergent water
  33. a magnet
  34. detergent water
  35. True
  36. False
  37. False
  38. True
  39. vinegar
  40. True

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