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Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 828 · 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.🧺 Do we need yeast for the turmeric test? (a) needed (b) not needed
  2. 2.🟡 Which of these keeps turmeric yellow? (a) detergent water (b) baking soda water (c) soap solution (d) salt water
  3. 3.True or false: orange juice is a base. (a) False (b) True
  4. 4.🫧 Is orange juice an acid, a base or neutral? (a) a base (b) an acid (c) neutral
  5. 5.🫧 Which of these is neutral? (a) baking soda water (b) salt water (c) soap solution (d) vinegar
  6. 6.🛟 Which rule keeps the turmeric test safe? (a) mix bathroom cleaners (b) use only kitchen items (c) sip each liquid (d) sniff each bottle hard
  7. 7.🧺 Which of these is not needed for the turmeric test? (a) white paper strips (b) water (c) a balloon (d) turmeric powder
  8. 8.🛟 Turmeric stains clothes. What should you wear? (a) your best clothes (b) your school uniform (c) an old shirt or apron (d) a white party dress
  9. 9.True or false: sugar water keeps turmeric yellow. (a) True (b) False
  10. 10.🧺 Do we need white paper strips for the turmeric test? (a) needed (b) not needed
  11. 11.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it stays yellow (b) it turns red (c) it turns blue (d) it turns black
  12. 12.🫧 Is tamarind water an acid, a base or neutral? (a) a base (b) neutral (c) an acid
  13. 13.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the turmeric paper”? (a) we change it (b) we keep it the same (c) we measure it
  14. 14.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is what we measure. (a) True (b) False
  15. 15.⚖️ 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
  16. 16.True or false: a mirror is not needed for the turmeric test. (a) True (b) False
  17. 17.🍋 A drop of lemon juice falls on turmeric paper. What happens? (a) it turns black (b) it turns blue (c) it turns red (d) it stays yellow
  18. 18.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the colour we see”? (a) we keep it the same (b) we measure it (c) we change it
  19. 19.True or false: white paper strips is not needed for the turmeric test. (a) False (b) True
  20. 20.⚖️ 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 liquid we test (d) the light we look in
  21. 21.🧺 Which of these is needed for the turmeric test? (a) a mirror (b) turmeric powder (c) yeast (d) a battery cell
  22. 22.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) water (c) yeast (d) soap solution
  23. 23.🫧 Is detergent water an acid, a base or neutral? (a) a base (b) an acid (c) neutral
  24. 24.🫧 Is vinegar an acid, a base or neutral? (a) an acid (b) neutral (c) a base
  25. 25.🟡 Turmeric paper meets salt water. What happens? (a) turns reddish-brown (b) stays yellow
  26. 26.🧺 Which of these is needed for the turmeric test? (a) yeast (b) a balloon (c) a mirror (d) white paper strips
  27. 27.🧺 Which of these is not needed for the turmeric test? (a) a magnet (b) white paper strips (c) lemon juice (d) turmeric powder
  28. 28.🧺 Which of these is not needed for the turmeric test? (a) turmeric powder (b) soap solution (c) a dropper or spoon (d) a battery cell
  29. 29.🟡 Which of these keeps turmeric yellow? (a) baking soda water (b) soap solution (c) sugar water (d) detergent water
  30. 30.True or false: yeast is not needed for the turmeric test. (a) False (b) True
  31. 31.⚖️ 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
  32. 32.True or false: baking soda water turns turmeric reddish-brown. (a) False (b) True
  33. 33.🫧 Which of these is an acid? (a) sugar water (b) curd (c) plain water (d) detergent water
  34. 34.🫧 Is sugar water an acid, a base or neutral? (a) an acid (b) a base (c) neutral
  35. 35.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) a dropper or spoon (c) white paper strips (d) a magnet
  36. 36.True or false: tamarind water turns turmeric reddish-brown. (a) False (b) True
  37. 37.🟡 Which of these turns turmeric reddish-brown? (a) sugar water (b) tamarind water (c) vinegar (d) baking soda water
  38. 38.🫧 Is soap solution an acid, a base or neutral? (a) an acid (b) a base (c) neutral
  39. 39.True or false: a battery cell is needed for the turmeric test. (a) False (b) True
  40. 40.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) a battery cell (c) lemon juice (d) soap solution

Answer key

  1. not needed
  2. salt water
  3. False
  4. an acid
  5. salt water
  6. use only kitchen items
  7. a balloon
  8. an old shirt or apron
  9. True
  10. needed
  11. it stays yellow
  12. an acid
  13. we keep it the same
  14. False
  15. the colour we see
  16. True
  17. it stays yellow
  18. we measure it
  19. False
  20. the liquid we test
  21. turmeric powder
  22. yeast
  23. a base
  24. an acid
  25. stays yellow
  26. white paper strips
  27. a magnet
  28. a battery cell
  29. sugar water
  30. True
  31. True
  32. True
  33. curd
  34. neutral
  35. a magnet
  36. False
  37. baking soda water
  38. a base
  39. False
  40. a battery cell

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