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Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 485 · 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.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it stays yellow (b) reddish-brown (c) it turns blue (d) it turns green
  2. 2.True or false: soap solution keeps turmeric yellow. (a) False (b) True
  3. 3.True or false: lemon juice is a base. (a) False (b) True
  4. 4.🛟 Which rule keeps the turmeric test safe? (a) sip each liquid (b) use only kitchen items (c) sniff each bottle hard (d) mix bathroom cleaners
  5. 5.🔍 Which is the odd one out? (a) detergent water (b) soap solution (c) salt water (d) baking soda water
  6. 6.🟡 Which of these turns turmeric reddish-brown? (a) plain water (b) detergent water (c) lemon juice (d) vinegar
  7. 7.🟡 Which of these turns turmeric paper reddish-brown? (a) vinegar (b) sugar water (c) lemon juice (d) soap solution
  8. 8.🛟 Turmeric stains clothes. What should you wear? (a) your school uniform (b) an old shirt or apron (c) your best clothes (d) a white party dress
  9. 9.True or false: lemon juice is needed for the turmeric test. (a) True (b) False
  10. 10.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) lemon juice (c) soap solution (d) a balloon
  11. 11.🧺 Which of these is needed for the turmeric test? (a) a mirror (b) water (c) a balloon (d) a battery cell
  12. 12.🧺 Which of these is not needed for the turmeric test? (a) lemon juice (b) a dropper or spoon (c) soap solution (d) a balloon
  13. 13.True or false: a comb is needed for the turmeric test. (a) True (b) False
  14. 14.🧺 Do we need yeast for the turmeric test? (a) needed (b) not needed
  15. 15.🫧 Is sugar water an acid, a base or neutral? (a) a base (b) an acid (c) neutral
  16. 16.🟡 Which of these turns turmeric reddish-brown? (a) lemon juice (b) soap solution (c) tamarind water (d) plain water
  17. 17.🫧 Is plain water an acid, a base or neutral? (a) a base (b) an acid (c) neutral
  18. 18.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the colour we see”? (a) we change it (b) we measure it (c) we keep it the same
  19. 19.True or false: soap solution is an acid. (a) False (b) True
  20. 20.True or false: soap solution is a base. (a) True (b) False
  21. 21.🧺 Which of these is not needed for the turmeric test? (a) yeast (b) a dropper or spoon (c) turmeric powder (d) water
  22. 22.True or false: lemon juice is an acid. (a) False (b) True
  23. 23.🟡 Turmeric paper meets lemon juice. What happens? (a) turns reddish-brown (b) stays yellow
  24. 24.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) water (c) soap solution (d) a magnet
  25. 25.⚖️ 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
  26. 26.🟡 Turmeric paper meets sugar water. What happens? (a) turns reddish-brown (b) stays yellow
  27. 27.🧺 Do we need water for the turmeric test? (a) not needed (b) needed
  28. 28.True or false: detergent water keeps turmeric yellow. (a) True (b) False
  29. 29.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a dropper or spoon (b) turmeric powder (c) water (d) a comb
  30. 30.🧺 Which of these is not needed for the turmeric test? (a) lemon juice (b) white paper strips (c) a mirror (d) turmeric powder
  31. 31.🧺 Do we need a magnet for the turmeric test? (a) needed (b) not needed
  32. 32.🔍 Which is the odd one out? (a) soap solution (b) plain water (c) tamarind water (d) vinegar
  33. 33.🟡 Turmeric paper meets salt water. What happens? (a) turns reddish-brown (b) stays yellow
  34. 34.📘 What do we call something that changes colour to show an acid or a base? (a) a prism (b) an indicator (c) a magnet (d) a pulley
  35. 35.🫧 Which of these is neutral? (a) curd (b) sugar water (c) baking soda water (d) vinegar
  36. 36.🟡 Turmeric paper meets soap solution. What happens? (a) turns reddish-brown (b) stays yellow
  37. 37.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is what we measure. (a) False (b) True
  38. 38.True or false: white paper strips is not needed for the turmeric test. (a) False (b) True
  39. 39.🧺 Do we need soap solution for the turmeric test? (a) needed (b) not needed
  40. 40.True or false: water is not needed for the turmeric test. (a) True (b) False

Answer key

  1. reddish-brown
  2. False
  3. False
  4. use only kitchen items
  5. salt water
  6. detergent water
  7. soap solution
  8. an old shirt or apron
  9. True
  10. a balloon
  11. water
  12. a balloon
  13. False
  14. not needed
  15. neutral
  16. soap solution
  17. neutral
  18. we measure it
  19. False
  20. True
  21. yeast
  22. True
  23. stays yellow
  24. a magnet
  25. we keep it the same
  26. stays yellow
  27. needed
  28. False
  29. a comb
  30. a mirror
  31. not needed
  32. soap solution
  33. stays yellow
  34. an indicator
  35. sugar water
  36. turns reddish-brown
  37. True
  38. False
  39. needed
  40. False

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