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Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 492 · 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.🧺 Which of these is needed for the turmeric test? (a) a balloon (b) a battery cell (c) water (d) a magnet
  2. 2.⚖️ 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
  3. 3.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) bright blue (b) green (c) it stays white (d) reddish-brown
  4. 4.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the number of drops (b) the colour we see (c) the liquid we test
  5. 5.🔍 Which is the odd one out? (a) salt water (b) soap solution (c) vinegar (d) sugar water
  6. 6.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a balloon (b) lemon juice (c) turmeric powder (d) soap solution
  7. 7.⚖️ 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
  8. 8.🧺 Do we need water for the turmeric test? (a) needed (b) not needed
  9. 9.🫧 Is soap solution an acid, a base or neutral? (a) a base (b) neutral (c) an acid
  10. 10.True or false: lemon juice is not needed for the turmeric test. (a) True (b) False
  11. 11.🟡 Which of these keeps turmeric yellow? (a) baking soda water (b) tamarind water (c) soap solution (d) detergent water
  12. 12.True or false: water is not needed for the turmeric test. (a) False (b) True
  13. 13.🛟 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
  14. 14.True or false: a balloon is not needed for the turmeric test. (a) True (b) False
  15. 15.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) water (c) a dropper or spoon (d) yeast
  16. 16.🟡 Which of these keeps turmeric yellow? (a) baking soda water (b) detergent water (c) soap solution (d) plain water
  17. 17.⚖️ 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
  18. 18.🧺 Which of these is not needed for the turmeric test? (a) a balloon (b) lemon juice (c) water (d) turmeric powder
  19. 19.🟡 Turmeric paper meets vinegar. What happens? (a) stays yellow (b) turns reddish-brown
  20. 20.True or false: vinegar is a base. (a) False (b) True
  21. 21.🟡 Which of these turns turmeric reddish-brown? (a) plain water (b) lemon juice (c) vinegar (d) baking soda water
  22. 22.True or false: a balloon is needed for the turmeric test. (a) False (b) True
  23. 23.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is kept the same. (a) False (b) True
  24. 24.🧺 Which of these is not needed for the turmeric test? (a) white paper strips (b) a dropper or spoon (c) lemon juice (d) a magnet
  25. 25.True or false: a comb is not needed for the turmeric test. (a) True (b) False
  26. 26.🫧 Which of these is neutral? (a) soap solution (b) salt water (c) baking soda water (d) vinegar
  27. 27.🟡 Turmeric paper meets soap solution. What happens? (a) turns reddish-brown (b) stays yellow
  28. 28.🫧 Is orange juice an acid, a base or neutral? (a) an acid (b) neutral (c) a base
  29. 29.True or false: plain water keeps turmeric yellow. (a) False (b) True
  30. 30.🧺 Do we need white paper strips for the turmeric test? (a) needed (b) not needed
  31. 31.⚖️ 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 change it (c) we keep it the same
  32. 32.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) water (c) a dropper or spoon (d) a battery cell
  33. 33.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a mirror (b) a dropper or spoon (c) lemon juice (d) water
  34. 34.🔍 Which is the odd one out? (a) baking soda water (b) vinegar (c) soap solution (d) detergent water
  35. 35.🧺 Which of these is not needed for the turmeric test? (a) white paper strips (b) yeast (c) water (d) lemon juice
  36. 36.🫧 Is curd an acid, a base or neutral? (a) a base (b) neutral (c) an acid
  37. 37.🧺 Do we need a magnet for the turmeric test? (a) not needed (b) needed
  38. 38.🟡 Turmeric paper meets lemon juice. What happens? (a) stays yellow (b) turns reddish-brown
  39. 39.🫧 Which of these is an acid? (a) baking soda water (b) detergent water (c) plain water (d) tamarind water
  40. 40.True or false: sugar water is an acid. (a) True (b) False

Answer key

  1. water
  2. we change it
  3. reddish-brown
  4. the number of drops
  5. soap solution
  6. a balloon
  7. True
  8. needed
  9. a base
  10. False
  11. tamarind water
  12. False
  13. an old shirt or apron
  14. True
  15. yeast
  16. plain water
  17. we keep it the same
  18. a balloon
  19. stays yellow
  20. False
  21. baking soda water
  22. False
  23. True
  24. a magnet
  25. True
  26. salt water
  27. turns reddish-brown
  28. an acid
  29. True
  30. needed
  31. we keep it the same
  32. a battery cell
  33. a mirror
  34. vinegar
  35. yeast
  36. an acid
  37. not needed
  38. stays yellow
  39. tamarind water
  40. False

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