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Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 163 · 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.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) reddish-brown (b) it turns blue (c) it turns green (d) it stays yellow
  2. 2.🧺 Do we need a battery cell for the turmeric test? (a) not needed (b) needed
  3. 3.🧺 Do we need a magnet for the turmeric test? (a) needed (b) not needed
  4. 4.🟡 Which of these keeps turmeric yellow? (a) soap solution (b) baking soda water (c) plain water (d) detergent water
  5. 5.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) white paper strips (b) soap solution (c) a dropper or spoon (d) a comb
  6. 6.⚖️ 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
  7. 7.True or false: lemon juice is an acid. (a) False (b) True
  8. 8.🔍 Which is the odd one out? (a) vinegar (b) salt water (c) soap solution (d) lemon juice
  9. 9.🫧 Which of these is an acid? (a) sugar water (b) detergent water (c) lemon juice (d) salt water
  10. 10.True or false: plain water turns turmeric reddish-brown. (a) False (b) True
  11. 11.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns red (b) it turns black (c) it turns blue (d) it stays yellow
  12. 12.True or false: soap solution is not needed for the turmeric test. (a) True (b) False
  13. 13.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) water (c) white paper strips (d) a battery cell
  14. 14.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the colour we see”? (a) we change it (b) we keep it the same (c) we measure it
  15. 15.🔍 Which is the odd one out? (a) soap solution (b) baking soda water (c) detergent water (d) vinegar
  16. 16.🟡 Which of these turns turmeric reddish-brown? (a) vinegar (b) lemon juice (c) plain water (d) soap solution
  17. 17.True or false: a comb is needed for the turmeric test. (a) True (b) False
  18. 18.🧺 Do we need lemon juice for the turmeric test? (a) not needed (b) needed
  19. 19.🟡 Which of these turns turmeric reddish-brown? (a) tamarind water (b) detergent water (c) vinegar (d) salt water
  20. 20.🧺 Do we need water for the turmeric test? (a) needed (b) not needed
  21. 21.🫧 Which of these is a base? (a) detergent water (b) lemon juice (c) salt water (d) vinegar
  22. 22.True or false: salt water turns turmeric reddish-brown. (a) False (b) True
  23. 23.🫧 Is orange juice an acid, a base or neutral? (a) neutral (b) an acid (c) a base
  24. 24.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) it stays white (b) bright blue (c) reddish-brown (d) green
  25. 25.🛟 Turmeric stains clothes. What should you wear? (a) your school uniform (b) an old shirt or apron (c) a white party dress (d) your best clothes
  26. 26.🫧 Which of these is a base? (a) vinegar (b) baking soda water (c) sugar water (d) plain water
  27. 27.🟡 Turmeric paper meets tamarind water. What happens? (a) turns reddish-brown (b) stays yellow
  28. 28.True or false: baking soda water turns turmeric reddish-brown. (a) True (b) False
  29. 29.⚖️ 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 turmeric paper
  30. 30.🧺 Do we need turmeric powder for the turmeric test? (a) needed (b) not needed
  31. 31.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) white paper strips (b) a balloon (c) lemon juice (d) soap solution
  32. 32.🔍 Which is the odd one out? (a) tamarind water (b) soap solution (c) detergent water (d) baking soda water
  33. 33.🧺 Which of these is not needed for the turmeric test? (a) water (b) turmeric powder (c) soap solution (d) a balloon
  34. 34.🧺 Which of these is needed for the turmeric test? (a) lemon juice (b) a mirror (c) a balloon (d) a battery cell
  35. 35.🟡 Turmeric paper meets plain water. What happens? (a) turns reddish-brown (b) stays yellow
  36. 36.🧺 Do we need a balloon for the turmeric test? (a) needed (b) not needed
  37. 37.🧺 Which of these is not needed for the turmeric test? (a) turmeric powder (b) white paper strips (c) a comb (d) lemon juice
  38. 38.⚖️ 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
  39. 39.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) turmeric powder (c) lemon juice (d) yeast
  40. 40.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the number of drops”? (a) we keep it the same (b) we change it (c) we measure it

Answer key

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

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