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Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 870 · 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 dropper or spoon is not needed for the turmeric test. (a) True (b) False
  2. 2.🧺 Do we need a dropper or spoon for the turmeric test? (a) not needed (b) needed
  3. 3.🧺 Which of these is needed for the turmeric test? (a) a magnet (b) a battery cell (c) a comb (d) turmeric powder
  4. 4.🛟 Turmeric stains clothes. What should you wear? (a) your best clothes (b) an old shirt or apron (c) a white party dress (d) your school uniform
  5. 5.🧺 Do we need lemon juice for the turmeric test? (a) needed (b) not needed
  6. 6.True or false: plain water keeps turmeric yellow. (a) True (b) False
  7. 7.🟡 Turmeric paper meets lemon juice. What happens? (a) stays yellow (b) turns reddish-brown
  8. 8.🧺 Do we need water for the turmeric test? (a) needed (b) not needed
  9. 9.🔍 Which is the odd one out? (a) vinegar (b) lemon juice (c) baking soda water (d) plain water
  10. 10.🫧 Is tamarind water an acid, a base or neutral? (a) a base (b) an acid (c) neutral
  11. 11.🔍 Which is the odd one out? (a) detergent water (b) baking soda water (c) soap solution (d) vinegar
  12. 12.🫧 Is salt water an acid, a base or neutral? (a) a base (b) an acid (c) neutral
  13. 13.🧺 Which of these is needed for the turmeric test? (a) a battery cell (b) a balloon (c) lemon juice (d) a mirror
  14. 14.True or false: tamarind water is neutral. (a) True (b) False
  15. 15.🧺 Which of these is not needed for the turmeric test? (a) a comb (b) soap solution (c) a dropper or spoon (d) turmeric powder
  16. 16.🧺 Do we need a balloon for the turmeric test? (a) needed (b) not needed
  17. 17.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) white paper strips (c) a battery cell (d) lemon juice
  18. 18.True or false: lemon juice is neutral. (a) True (b) False
  19. 19.True or false: a magnet is needed for the turmeric test. (a) True (b) False
  20. 20.True or false: soap solution is not needed for the turmeric test. (a) True (b) False
  21. 21.🧺 Do we need white paper strips for the turmeric test? (a) not needed (b) needed
  22. 22.🟡 Turmeric paper meets baking soda water. What happens? (a) stays yellow (b) turns reddish-brown
  23. 23.True or false: salt water keeps turmeric yellow. (a) False (b) True
  24. 24.🧺 Which of these is not needed for the turmeric test? (a) turmeric powder (b) a magnet (c) water (d) soap solution
  25. 25.🔮 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
  26. 26.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the number of drops (b) the turmeric paper (c) the colour we see (d) the liquid we test
  27. 27.🫧 Which of these is a base? (a) tamarind water (b) baking soda water (c) plain water (d) vinegar
  28. 28.True or false: soap solution keeps turmeric yellow. (a) True (b) False
  29. 29.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a mirror (b) soap solution (c) a dropper or spoon (d) turmeric powder
  30. 30.⚖️ 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
  31. 31.🧺 Do we need a battery cell for the turmeric test? (a) needed (b) not needed
  32. 32.True or false: soap solution turns turmeric reddish-brown. (a) False (b) True
  33. 33.🧺 Which of these is needed for the turmeric test? (a) a mirror (b) water (c) a balloon (d) a magnet
  34. 34.True or false: lemon juice keeps turmeric yellow. (a) True (b) False
  35. 35.🧺 Do we need a comb for the turmeric test? (a) not needed (b) needed
  36. 36.🫧 Is plain water an acid, a base or neutral? (a) neutral (b) an acid (c) a base
  37. 37.🧺 Which of these is not needed for the turmeric test? (a) white paper strips (b) soap solution (c) turmeric powder (d) a balloon
  38. 38.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) white paper strips (c) water (d) a balloon
  39. 39.⚖️ 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
  40. 40.🟡 Why does soap solution change turmeric’s colour? (a) soap is an acid (b) soap water is a base (c) soap is magnetic (d) soap is hot

Answer key

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

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