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Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 318 · 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.

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

Answer key

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

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