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Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 579 · 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.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the turmeric paper (b) the liquid we test (c) the colour we see
  2. 2.🔍 Which is the odd one out? (a) baking soda water (b) vinegar (c) tamarind water (d) sugar water
  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 measure it (c) we keep it the same
  4. 4.🫧 Is salt water an acid, a base or neutral? (a) a base (b) neutral (c) an acid
  5. 5.🍋 A reddish turmeric spot gets a few drops of lemon juice. What happens? (a) it turns darker red (b) it turns yellow again (c) it disappears (d) it turns blue
  6. 6.🍋 A drop of lemon juice falls on turmeric paper. What happens? (a) it turns blue (b) it stays yellow (c) it turns black (d) it turns red
  7. 7.🧺 Which of these is needed for the turmeric test? (a) a magnet (b) a battery cell (c) yeast (d) turmeric powder
  8. 8.🟡 Which of these turns turmeric reddish-brown? (a) tamarind water (b) salt water (c) baking soda water (d) lemon juice
  9. 9.True or false: sugar water is neutral. (a) True (b) False
  10. 10.🔮 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
  11. 11.🧺 Which of these is not needed for the turmeric test? (a) a dropper or spoon (b) a balloon (c) turmeric powder (d) water
  12. 12.🧺 Do we need a balloon for the turmeric test? (a) not needed (b) needed
  13. 13.🔍 Which is the odd one out? (a) plain water (b) vinegar (c) detergent water (d) tamarind water
  14. 14.True or false: salt water turns turmeric reddish-brown. (a) True (b) False
  15. 15.🧺 Which of these is not needed for the turmeric test? (a) turmeric powder (b) lemon juice (c) white paper strips (d) a battery cell
  16. 16.🟡 Which of these keeps turmeric yellow? (a) lemon juice (b) detergent water (c) soap solution (d) baking soda 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 keep it the same (c) we change it
  18. 18.True or false: sugar water keeps turmeric yellow. (a) True (b) False
  19. 19.True or false: vinegar is neutral. (a) True (b) False
  20. 20.🫧 Is lemon juice an acid, a base or neutral? (a) an acid (b) a base (c) neutral
  21. 21.🧺 Do we need a magnet for the turmeric test? (a) not needed (b) needed
  22. 22.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns black (b) it stays yellow (c) it turns red (d) it turns blue
  23. 23.🧺 Do we need lemon juice for the turmeric test? (a) needed (b) not needed
  24. 24.🫧 Which of these is a base? (a) sugar water (b) plain water (c) curd (d) soap solution
  25. 25.🟡 Turmeric paper meets lemon juice. What happens? (a) turns reddish-brown (b) stays yellow
  26. 26.🟡 Turmeric paper meets sugar water. What happens? (a) stays yellow (b) turns reddish-brown
  27. 27.True or false: vinegar is a base. (a) True (b) False
  28. 28.🛟 Turmeric stains clothes. What should you wear? (a) your school uniform (b) your best clothes (c) a white party dress (d) an old shirt or apron
  29. 29.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is kept the same. (a) False (b) True
  30. 30.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) a dropper or spoon (c) a balloon (d) white paper strips
  31. 31.🟡 Turmeric paper meets vinegar. What happens? (a) stays yellow (b) turns reddish-brown
  32. 32.🟡 Which of these keeps turmeric yellow? (a) soap solution (b) vinegar (c) detergent water (d) baking soda water
  33. 33.⚖️ 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 keep it the same (c) we change it
  34. 34.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) a comb (c) water (d) soap solution
  35. 35.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is kept the same. (a) True (b) False
  36. 36.🧺 Do we need soap solution for the turmeric test? (a) not needed (b) needed
  37. 37.🧺 Do we need white paper strips for the turmeric test? (a) needed (b) not needed
  38. 38.🫧 Which of these is neutral? (a) tamarind water (b) orange juice (c) salt water (d) lemon juice
  39. 39.True or false: soap solution is neutral. (a) False (b) True
  40. 40.True or false: soap solution is needed for the turmeric test. (a) False (b) True

Answer key

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

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