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Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 507 · 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: yeast is needed for the turmeric test. (a) True (b) False
  2. 2.True or false: a mirror is not needed for the turmeric test. (a) True (b) False
  3. 3.🛟 Turmeric stains clothes. What should you wear? (a) a white party dress (b) your best clothes (c) an old shirt or apron (d) your school uniform
  4. 4.🧺 Which of these is not needed for the turmeric test? (a) water (b) lemon juice (c) a dropper or spoon (d) a balloon
  5. 5.🔍 Which is the odd one out? (a) sugar water (b) detergent water (c) soap solution (d) baking soda water
  6. 6.🫧 Which of these is an acid? (a) salt water (b) soap solution (c) lemon juice (d) sugar water
  7. 7.True or false: water is needed for the turmeric test. (a) True (b) False
  8. 8.🟡 Which of these keeps turmeric yellow? (a) detergent water (b) soap solution (c) baking soda water (d) vinegar
  9. 9.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it stays yellow (b) it turns black (c) it turns blue (d) it turns red
  10. 10.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) white paper strips (c) a magnet (d) water
  11. 11.🟡 Which of these turns turmeric reddish-brown? (a) lemon juice (b) vinegar (c) baking soda water (d) tamarind water
  12. 12.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a dropper or spoon (b) white paper strips (c) yeast (d) lemon juice
  13. 13.🧺 Which of these is needed for the turmeric test? (a) turmeric powder (b) a mirror (c) yeast (d) a balloon
  14. 14.🧺 Do we need a mirror for the turmeric test? (a) not needed (b) needed
  15. 15.🧺 Do we need a balloon for the turmeric test? (a) not needed (b) needed
  16. 16.🟡 Which of these keeps turmeric yellow? (a) detergent water (b) baking soda water (c) salt water (d) soap solution
  17. 17.🟡 Which of these keeps turmeric yellow? (a) baking soda water (b) soap solution (c) plain water (d) detergent water
  18. 18.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the colour we see (b) the light we look in (c) the number of drops (d) the liquid we test
  19. 19.True or false: soap solution is needed for the turmeric test. (a) False (b) True
  20. 20.🟡 Turmeric paper meets lemon juice. What happens? (a) turns reddish-brown (b) stays yellow
  21. 21.True or false: sugar water is neutral. (a) True (b) False
  22. 22.🫧 Is salt water an acid, a base or neutral? (a) neutral (b) a base (c) an acid
  23. 23.True or false: lemon juice is an acid. (a) True (b) False
  24. 24.🟡 Which of these keeps turmeric yellow? (a) lemon juice (b) soap solution (c) baking soda water (d) detergent water
  25. 25.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the turmeric paper”? (a) we keep it the same (b) we change it (c) we measure it
  26. 26.True or false: a dropper or spoon is needed for the turmeric test. (a) False (b) True
  27. 27.True or false: salt water is neutral. (a) False (b) True
  28. 28.🧺 Which of these is needed for the turmeric test? (a) yeast (b) white paper strips (c) a magnet (d) a mirror
  29. 29.🟡 Why does soap solution change turmeric’s colour? (a) soap water is a base (b) soap is an acid (c) soap is hot (d) soap is magnetic
  30. 30.🫧 Is soap solution an acid, a base or neutral? (a) a base (b) an acid (c) neutral
  31. 31.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) reddish-brown (b) it turns green (c) it stays yellow (d) it turns blue
  32. 32.True or false: detergent water is a base. (a) True (b) False
  33. 33.🧺 Do we need turmeric powder for the turmeric test? (a) not needed (b) needed
  34. 34.🫧 Is tamarind water an acid, a base or neutral? (a) neutral (b) a base (c) an acid
  35. 35.True or false: plain water turns turmeric reddish-brown. (a) False (b) True
  36. 36.🟡 Which of these turns turmeric paper reddish-brown? (a) lemon juice (b) soap solution (c) vinegar (d) sugar water
  37. 37.🔍 Which is the odd one out? (a) detergent water (b) plain water (c) soap solution (d) baking soda water
  38. 38.🫧 Which of these is a base? (a) detergent water (b) plain water (c) curd (d) vinegar
  39. 39.🧺 Which of these is needed for the turmeric test? (a) a magnet (b) a balloon (c) a comb (d) soap solution
  40. 40.🫧 Is plain water an acid, a base or neutral? (a) an acid (b) a base (c) neutral

Answer key

  1. False
  2. True
  3. an old shirt or apron
  4. a balloon
  5. sugar water
  6. lemon juice
  7. True
  8. vinegar
  9. it stays yellow
  10. a magnet
  11. baking soda water
  12. yeast
  13. turmeric powder
  14. not needed
  15. not needed
  16. salt water
  17. plain water
  18. the colour we see
  19. True
  20. stays yellow
  21. True
  22. neutral
  23. True
  24. lemon juice
  25. we keep it the same
  26. True
  27. True
  28. white paper strips
  29. soap water is a base
  30. a base
  31. reddish-brown
  32. True
  33. needed
  34. an acid
  35. False
  36. soap solution
  37. plain water
  38. detergent water
  39. soap solution
  40. neutral

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