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Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 505 · 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.True or false: a comb is not needed for the turmeric test. (a) False (b) True
  2. 2.True or false: a balloon is needed for the turmeric test. (a) False (b) True
  3. 3.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the number of drops”? (a) we change it (b) we keep it the same (c) we measure it
  4. 4.🫧 Which of these is an acid? (a) sugar water (b) baking soda water (c) detergent water (d) lemon juice
  5. 5.True or false: salt water turns turmeric reddish-brown. (a) True (b) False
  6. 6.True or false: curd is an acid. (a) False (b) True
  7. 7.True or false: soap solution is not needed for the turmeric test. (a) False (b) True
  8. 8.⚖️ 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
  9. 9.True or false: water is not needed for the turmeric test. (a) True (b) False
  10. 10.🟡 Turmeric paper meets salt water. What happens? (a) stays yellow (b) turns reddish-brown
  11. 11.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) soap solution (c) white paper strips (d) a magnet
  12. 12.🟡 Which of these turns turmeric reddish-brown? (a) salt water (b) sugar water (c) plain water (d) detergent water
  13. 13.True or false: salt water is neutral. (a) False (b) True
  14. 14.🧺 Which of these is not needed for the turmeric test? (a) a magnet (b) lemon juice (c) soap solution (d) white paper strips
  15. 15.True or false: soap solution is neutral. (a) False (b) True
  16. 16.True or false: detergent water is a base. (a) False (b) True
  17. 17.🧺 Do we need a magnet for the turmeric test? (a) needed (b) not needed
  18. 18.🟡 Turmeric paper meets lemon juice. What happens? (a) stays yellow (b) turns reddish-brown
  19. 19.🛟 Turmeric stains clothes. What should you wear? (a) a white party dress (b) your school uniform (c) your best clothes (d) an old shirt or apron
  20. 20.🫧 Is orange juice an acid, a base or neutral? (a) neutral (b) a base (c) an acid
  21. 21.True or false: detergent water is an acid. (a) False (b) True
  22. 22.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the liquid we test (b) the colour we see (c) the light we look in
  23. 23.True or false: detergent water keeps turmeric yellow. (a) True (b) False
  24. 24.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the liquid we test (b) the colour we see (c) the light we look in (d) the number of drops
  25. 25.True or false: baking soda water turns turmeric reddish-brown. (a) False (b) True
  26. 26.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it stays yellow (b) it turns blue (c) it turns black (d) it turns red
  27. 27.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) white paper strips (b) soap solution (c) water (d) a comb
  28. 28.True or false: tamarind water is a base. (a) True (b) False
  29. 29.True or false: a mirror is needed for the turmeric test. (a) True (b) False
  30. 30.🫧 Is salt water an acid, a base or neutral? (a) a base (b) an acid (c) neutral
  31. 31.🫧 Is plain water an acid, a base or neutral? (a) neutral (b) a base (c) an acid
  32. 32.🫧 Which of these is a base? (a) baking soda water (b) vinegar (c) curd (d) orange juice
  33. 33.🔍 Which is the odd one out? (a) soap solution (b) baking soda water (c) detergent water (d) lemon juice
  34. 34.🧺 Which of these is not needed for the turmeric test? (a) white paper strips (b) a mirror (c) a dropper or spoon (d) water
  35. 35.🟡 Which of these keeps turmeric yellow? (a) vinegar (b) baking soda water (c) detergent water (d) soap solution
  36. 36.True or false: a magnet is needed for the turmeric test. (a) False (b) True
  37. 37.🧺 Which of these is needed for the turmeric test? (a) a magnet (b) a mirror (c) soap solution (d) a comb
  38. 38.🍋 A reddish turmeric spot gets a few drops of lemon juice. What happens? (a) it turns darker red (b) it turns blue (c) it disappears (d) it turns yellow again
  39. 39.🧺 Do we need yeast for the turmeric test? (a) needed (b) not needed
  40. 40.🔍 Which is the odd one out? (a) plain water (b) tamarind water (c) vinegar (d) soap solution

Answer key

  1. True
  2. False
  3. we keep it the same
  4. lemon juice
  5. False
  6. True
  7. False
  8. we keep it the same
  9. False
  10. stays yellow
  11. a magnet
  12. detergent water
  13. True
  14. a magnet
  15. False
  16. True
  17. not needed
  18. stays yellow
  19. an old shirt or apron
  20. an acid
  21. False
  22. the light we look in
  23. False
  24. the colour we see
  25. True
  26. it stays yellow
  27. a comb
  28. False
  29. False
  30. neutral
  31. neutral
  32. baking soda water
  33. lemon juice
  34. a mirror
  35. vinegar
  36. False
  37. soap solution
  38. it turns yellow again
  39. not needed
  40. soap solution

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