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Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 900 · 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.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is the one thing we change. (a) True (b) False
  2. 2.True or false: orange juice is neutral. (a) False (b) True
  3. 3.🧺 Which of these is needed for the turmeric test? (a) a battery cell (b) lemon juice (c) a magnet (d) a comb
  4. 4.🫧 Which of these is an acid? (a) plain water (b) lemon juice (c) baking soda water (d) soap solution
  5. 5.🫧 Is detergent water an acid, a base or neutral? (a) a base (b) neutral (c) an acid
  6. 6.🫧 Which of these is an acid? (a) detergent water (b) salt water (c) plain water (d) vinegar
  7. 7.True or false: lemon juice is a base. (a) False (b) True
  8. 8.🔍 Which is the odd one out? (a) soap solution (b) detergent water (c) baking soda water (d) sugar water
  9. 9.🔍 Which is the odd one out? (a) sugar water (b) vinegar (c) lemon juice (d) soap solution
  10. 10.🟡 Turmeric paper meets vinegar. What happens? (a) turns reddish-brown (b) stays yellow
  11. 11.🛟 Turmeric stains clothes. What should you wear? (a) your best clothes (b) your school uniform (c) a white party dress (d) an old shirt or apron
  12. 12.🟡 Which of these keeps turmeric yellow? (a) detergent water (b) vinegar (c) soap solution (d) baking soda water
  13. 13.🧺 Do we need a dropper or spoon for the turmeric test? (a) needed (b) not needed
  14. 14.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the liquid we test”? (a) we change it (b) we measure it (c) we keep it the same
  15. 15.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is the one thing we change. (a) False (b) True
  16. 16.🟡 Which of these keeps turmeric yellow? (a) plain water (b) soap solution (c) detergent water (d) baking soda water
  17. 17.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) white paper strips (c) a dropper or spoon (d) a battery cell
  18. 18.🧺 Do we need a mirror for the turmeric test? (a) needed (b) not needed
  19. 19.🟡 Which of these turns turmeric reddish-brown? (a) vinegar (b) salt water (c) detergent water (d) lemon juice
  20. 20.⚖️ 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
  21. 21.True or false: lemon juice is not needed for the turmeric test. (a) False (b) True
  22. 22.🟡 Turmeric paper meets plain water. What happens? (a) stays yellow (b) turns reddish-brown
  23. 23.True or false: a magnet is not needed for the turmeric test. (a) False (b) True
  24. 24.🧺 Which of these is needed for the turmeric test? (a) a balloon (b) a mirror (c) water (d) a magnet
  25. 25.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is kept the same. (a) False (b) True
  26. 26.🍋 A drop of lemon juice falls on turmeric paper. What happens? (a) it turns blue (b) it stays yellow (c) it turns red (d) it turns black
  27. 27.True or false: turmeric powder is not needed for the turmeric test. (a) False (b) True
  28. 28.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the turmeric paper”? (a) we measure it (b) we keep it the same (c) we change it
  29. 29.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the light we look in (b) the colour we see (c) the liquid we test
  30. 30.🧺 Which of these is needed for the turmeric test? (a) a magnet (b) a mirror (c) a dropper or spoon (d) a comb
  31. 31.🧺 Which of these is needed for the turmeric test? (a) a balloon (b) a magnet (c) white paper strips (d) a comb
  32. 32.🟡 Which of these turns turmeric reddish-brown? (a) soap solution (b) sugar water (c) plain water (d) tamarind water
  33. 33.🫧 Is baking soda water an acid, a base or neutral? (a) a base (b) neutral (c) an acid
  34. 34.🧺 Do we need a magnet for the turmeric test? (a) needed (b) not needed
  35. 35.🫧 Which of these is a base? (a) salt water (b) soap solution (c) curd (d) tamarind water
  36. 36.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) water (c) a dropper or spoon (d) a comb
  37. 37.True or false: lemon juice turns turmeric reddish-brown. (a) True (b) False
  38. 38.True or false: orange juice is a base. (a) True (b) False
  39. 39.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the number of drops (b) the light we look in (c) the colour we see (d) the turmeric paper
  40. 40.True or false: detergent water is neutral. (a) True (b) False

Answer key

  1. False
  2. False
  3. lemon juice
  4. lemon juice
  5. a base
  6. vinegar
  7. False
  8. sugar water
  9. soap solution
  10. stays yellow
  11. an old shirt or apron
  12. vinegar
  13. needed
  14. we change it
  15. True
  16. plain water
  17. a battery cell
  18. not needed
  19. detergent water
  20. we measure it
  21. False
  22. stays yellow
  23. True
  24. water
  25. True
  26. it stays yellow
  27. False
  28. we keep it the same
  29. the light we look in
  30. a dropper or spoon
  31. white paper strips
  32. soap solution
  33. a base
  34. not needed
  35. soap solution
  36. a comb
  37. False
  38. False
  39. the colour we see
  40. False

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