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Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 190 · 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.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) green (b) it stays white (c) bright blue (d) reddish-brown
  2. 2.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) turmeric powder (c) a balloon (d) white paper strips
  3. 3.True or false: white paper strips is not needed for the turmeric test. (a) True (b) False
  4. 4.🫧 Which of these is neutral? (a) tamarind water (b) soap solution (c) detergent water (d) salt water
  5. 5.🧺 Do we need a mirror for the turmeric test? (a) not needed (b) needed
  6. 6.🧺 Which of these is needed for the turmeric test? (a) a battery cell (b) a magnet (c) water (d) a balloon
  7. 7.🔍 Which is the odd one out? (a) baking soda water (b) detergent water (c) soap solution (d) tamarind water
  8. 8.🟡 Turmeric paper meets sugar water. What happens? (a) turns reddish-brown (b) stays yellow
  9. 9.🫧 Is baking soda water an acid, a base or neutral? (a) an acid (b) a base (c) neutral
  10. 10.🧺 Which of these is not needed for the turmeric test? (a) yeast (b) turmeric powder (c) lemon juice (d) soap solution
  11. 11.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is the one thing we change. (a) True (b) False
  12. 12.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the turmeric paper (b) the light we look in (c) the number of drops (d) the colour we see
  13. 13.🫧 Is curd an acid, a base or neutral? (a) an acid (b) neutral (c) a base
  14. 14.True or false: yeast is needed for the turmeric test. (a) True (b) False
  15. 15.🛟 Turmeric stains clothes. What should you wear? (a) an old shirt or apron (b) your school uniform (c) a white party dress (d) your best clothes
  16. 16.True or false: plain water turns turmeric reddish-brown. (a) False (b) True
  17. 17.🔍 Which is the odd one out? (a) tamarind water (b) sugar water (c) plain water (d) soap solution
  18. 18.True or false: lemon juice keeps turmeric yellow. (a) True (b) False
  19. 19.True or false: a comb is needed for the turmeric test. (a) False (b) True
  20. 20.🛟 Which rule keeps the turmeric test safe? (a) sniff each bottle hard (b) mix bathroom cleaners (c) sip each liquid (d) use only kitchen items
  21. 21.True or false: turmeric powder 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) lemon juice (c) turmeric powder (d) a battery cell
  23. 23.True or false: baking soda water keeps turmeric yellow. (a) False (b) True
  24. 24.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it turns blue (b) it stays yellow (c) reddish-brown (d) it turns green
  25. 25.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) white paper strips (b) yeast (c) soap solution (d) turmeric powder
  26. 26.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the colour we see (b) the liquid we test (c) the turmeric paper
  27. 27.🧺 Which of these is needed for the turmeric test? (a) lemon juice (b) a battery cell (c) a mirror (d) a magnet
  28. 28.⚖️ 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
  29. 29.True or false: detergent water is an acid. (a) True (b) False
  30. 30.True or false: a magnet is not needed for the turmeric test. (a) False (b) True
  31. 31.True or false: plain water is an acid. (a) True (b) False
  32. 32.🧺 Do we need a comb for the turmeric test? (a) needed (b) not needed
  33. 33.True or false: tamarind water turns turmeric reddish-brown. (a) True (b) False
  34. 34.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns blue (b) it turns black (c) it turns red (d) it stays yellow
  35. 35.🧺 Which of these is not needed for the turmeric test? (a) a dropper or spoon (b) a battery cell (c) turmeric powder (d) white paper strips
  36. 36.True or false: lemon juice is needed for the turmeric test. (a) False (b) True
  37. 37.🍋 A drop of lemon juice falls on turmeric paper. What happens? (a) it turns red (b) it turns black (c) it turns blue (d) it stays yellow
  38. 38.🟡 Turmeric paper meets soap solution. What happens? (a) stays yellow (b) turns reddish-brown
  39. 39.⚖️ 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 keep it the same (c) we change it
  40. 40.⚖️ 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

Answer key

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

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