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Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 856 · 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 neutral? (a) baking soda water (b) soap solution (c) plain water (d) tamarind water
  2. 2.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a comb (b) white paper strips (c) a dropper or spoon (d) turmeric powder
  3. 3.🟡 Which of these keeps turmeric yellow? (a) baking soda water (b) detergent water (c) vinegar (d) soap solution
  4. 4.🔍 Which is the odd one out? (a) tamarind water (b) vinegar (c) plain water (d) detergent water
  5. 5.True or false: a magnet is needed for the turmeric test. (a) False (b) True
  6. 6.🟡 Which of these keeps turmeric yellow? (a) detergent water (b) lemon juice (c) soap solution (d) baking soda water
  7. 7.🧺 Do we need a balloon for the turmeric test? (a) not needed (b) needed
  8. 8.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) bright blue (b) green (c) reddish (d) white at once
  9. 9.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the colour we see”? (a) we measure it (b) we change it (c) we keep it the same
  10. 10.🔍 Which is the odd one out? (a) salt water (b) baking soda water (c) vinegar (d) plain water
  11. 11.True or false: yeast is needed for the turmeric test. (a) False (b) True
  12. 12.🧺 Do we need a mirror for the turmeric test? (a) needed (b) not needed
  13. 13.🧺 Do we need soap solution for the turmeric test? (a) not needed (b) needed
  14. 14.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the turmeric paper (b) the colour we see (c) the number of drops (d) the liquid we test
  15. 15.⚖️ 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 measure it (c) we change it
  16. 16.🧺 Do we need white paper strips for the turmeric test? (a) needed (b) not needed
  17. 17.True or false: a comb is not needed for the turmeric test. (a) True (b) False
  18. 18.True or false: turmeric powder is needed for the turmeric test. (a) True (b) False
  19. 19.🧺 Which of these is needed for the turmeric test? (a) a battery cell (b) a magnet (c) yeast (d) soap solution
  20. 20.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is the one thing we change. (a) False (b) True
  21. 21.🧺 Which of these is not needed for the turmeric test? (a) lemon juice (b) a magnet (c) a dropper or spoon (d) turmeric powder
  22. 22.🧺 Which of these is needed for the turmeric test? (a) a magnet (b) white paper strips (c) a mirror (d) a balloon
  23. 23.True or false: a balloon is needed for the turmeric test. (a) False (b) True
  24. 24.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a mirror (b) lemon juice (c) soap solution (d) water
  25. 25.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) soap solution (c) yeast (d) white paper strips
  26. 26.🫧 Which of these is an acid? (a) soap solution (b) sugar water (c) baking soda water (d) orange juice
  27. 27.⚖️ 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
  28. 28.🧺 Do we need a magnet for the turmeric test? (a) not needed (b) needed
  29. 29.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) reddish-brown (b) it turns blue (c) it stays yellow (d) it turns green
  30. 30.🟡 Turmeric paper meets sugar water. What happens? (a) stays yellow (b) turns reddish-brown
  31. 31.True or false: baking soda water is a base. (a) False (b) True
  32. 32.🍋 A drop of lemon juice falls on turmeric paper. What happens? (a) it stays yellow (b) it turns blue (c) it turns red (d) it turns black
  33. 33.🫧 Which of these is a base? (a) orange juice (b) salt water (c) sugar water (d) detergent water
  34. 34.🔍 Which is the odd one out? (a) soap solution (b) tamarind water (c) detergent water (d) baking soda water
  35. 35.⚖️ 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 change it (c) we measure it
  36. 36.🧺 Which of these is not needed for the turmeric test? (a) soap solution (b) a battery cell (c) lemon juice (d) water
  37. 37.True or false: turmeric powder is not needed for the turmeric test. (a) True (b) False
  38. 38.🫧 Which of these is a base? (a) tamarind water (b) lemon juice (c) sugar water (d) baking soda water
  39. 39.🟡 Which of these keeps turmeric yellow? (a) sugar water (b) soap solution (c) baking soda water (d) detergent water
  40. 40.True or false: yeast is not needed for the turmeric test. (a) False (b) True

Answer key

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

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