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Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 231 · 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.🧺 Do we need a balloon for the turmeric test? (a) not needed (b) needed
  2. 2.🔍 Which is the odd one out? (a) sugar water (b) detergent water (c) lemon juice (d) plain water
  3. 3.🟡 Which of these turns turmeric paper reddish-brown? (a) soap solution (b) sugar water (c) lemon juice (d) vinegar
  4. 4.🔍 Which is the odd one out? (a) baking soda water (b) vinegar (c) tamarind water (d) sugar water
  5. 5.True or false: a magnet is needed for the turmeric test. (a) False (b) True
  6. 6.True or false: salt water keeps turmeric yellow. (a) False (b) True
  7. 7.🟡 Turmeric paper meets detergent water. What happens? (a) stays yellow (b) turns reddish-brown
  8. 8.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the turmeric paper”? (a) we change it (b) we measure it (c) we keep it the same
  9. 9.🫧 Which of these is a base? (a) plain water (b) baking soda water (c) orange juice (d) curd
  10. 10.True or false: lemon juice is needed for the turmeric test. (a) False (b) True
  11. 11.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the light we look in is kept the same. (a) False (b) True
  12. 12.🫧 Is orange juice an acid, a base or neutral? (a) neutral (b) an acid (c) a base
  13. 13.🟡 Which of these turns turmeric reddish-brown? (a) tamarind water (b) soap solution (c) vinegar (d) lemon juice
  14. 14.🫧 Is lemon juice an acid, a base or neutral? (a) a base (b) an acid (c) neutral
  15. 15.True or false: white paper strips is needed for the turmeric test. (a) False (b) True
  16. 16.🟡 Which of these turns turmeric reddish-brown? (a) detergent water (b) lemon juice (c) salt water (d) plain water
  17. 17.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) water (c) soap solution (d) a mirror
  18. 18.True or false: lemon juice is not needed for the turmeric test. (a) True (b) False
  19. 19.🫧 Which of these is neutral? (a) tamarind water (b) vinegar (c) baking soda water (d) sugar water
  20. 20.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the number of drops”? (a) we measure it (b) we keep it the same (c) we change it
  21. 21.🟡 Turmeric paper meets tamarind water. What happens? (a) turns reddish-brown (b) stays yellow
  22. 22.🟡 Turmeric paper meets soap solution. What happens? (a) stays yellow (b) turns reddish-brown
  23. 23.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a magnet (b) turmeric powder (c) a dropper or spoon (d) white paper strips
  24. 24.True or false: turmeric powder is not needed for the turmeric test. (a) True (b) False
  25. 25.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is kept the same. (a) False (b) True
  26. 26.🔍 Which is the odd one out? (a) soap solution (b) lemon juice (c) sugar water (d) vinegar
  27. 27.🧺 Which of these is needed for the turmeric test? (a) a mirror (b) a magnet (c) white paper strips (d) a battery cell
  28. 28.🟡 Which of these turns turmeric reddish-brown? (a) plain water (b) baking soda water (c) sugar water (d) vinegar
  29. 29.🫧 Is vinegar an acid, a base or neutral? (a) an acid (b) neutral (c) a base
  30. 30.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is the one thing we change. (a) False (b) True
  31. 31.True or false: a mirror is needed for the turmeric test. (a) True (b) False
  32. 32.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) a dropper or spoon (c) a balloon (d) white paper strips
  33. 33.True or false: soap solution keeps turmeric yellow. (a) False (b) True
  34. 34.🧺 Do we need yeast for the turmeric test? (a) needed (b) not needed
  35. 35.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the number of drops (b) the liquid we test (c) the colour we see
  36. 36.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the liquid we test”? (a) we keep it the same (b) we measure it (c) we change it
  37. 37.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the turmeric paper (b) the colour we see (c) the number of drops (d) the liquid we test
  38. 38.🧺 Which of these is needed for the turmeric test? (a) water (b) a mirror (c) yeast (d) a balloon
  39. 39.🧺 Do we need a magnet for the turmeric test? (a) needed (b) not needed
  40. 40.True or false: a mirror is not needed for the turmeric test. (a) True (b) False

Answer key

  1. not needed
  2. detergent water
  3. soap solution
  4. baking soda water
  5. False
  6. True
  7. turns reddish-brown
  8. we keep it the same
  9. baking soda water
  10. True
  11. True
  12. an acid
  13. soap solution
  14. an acid
  15. True
  16. detergent water
  17. a mirror
  18. False
  19. sugar water
  20. we keep it the same
  21. stays yellow
  22. turns reddish-brown
  23. a magnet
  24. False
  25. False
  26. soap solution
  27. white paper strips
  28. baking soda water
  29. an acid
  30. False
  31. False
  32. a balloon
  33. False
  34. not needed
  35. the number of drops
  36. we change it
  37. the liquid we test
  38. water
  39. not needed
  40. True

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