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Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 364 · 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? What do we do with “the liquid we test”? (a) we keep it the same (b) we change it (c) we measure it
  2. 2.🟡 Which of these turns turmeric reddish-brown? (a) lemon juice (b) salt water (c) sugar water (d) baking soda water
  3. 3.🫧 Is baking soda water an acid, a base or neutral? (a) a base (b) neutral (c) an acid
  4. 4.🧺 Which of these is not needed for the turmeric test? (a) a dropper or spoon (b) a battery cell (c) turmeric powder (d) water
  5. 5.True or false: sugar water turns turmeric reddish-brown. (a) False (b) True
  6. 6.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) turmeric powder (c) a battery cell (d) water
  7. 7.🛟 Turmeric stains clothes. What should you wear? (a) your school uniform (b) your best clothes (c) an old shirt or apron (d) a white party dress
  8. 8.True or false: tamarind water turns turmeric reddish-brown. (a) False (b) True
  9. 9.🔍 Which is the odd one out? (a) baking soda water (b) detergent water (c) soap solution (d) vinegar
  10. 10.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) reddish-brown (b) it stays yellow (c) it turns green (d) it turns blue
  11. 11.🟡 Turmeric paper meets lemon juice. What happens? (a) stays yellow (b) turns reddish-brown
  12. 12.⚖️ 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
  13. 13.True or false: lemon juice is not needed for the turmeric test. (a) True (b) False
  14. 14.🫧 Is curd an acid, a base or neutral? (a) neutral (b) a base (c) an acid
  15. 15.🧺 Which of these is needed for the turmeric test? (a) a battery cell (b) a magnet (c) soap solution (d) yeast
  16. 16.True or false: vinegar is an acid. (a) True (b) False
  17. 17.True or false: sugar water is an acid. (a) False (b) True
  18. 18.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) white paper strips (b) a balloon (c) turmeric powder (d) a dropper or spoon
  19. 19.🟡 Turmeric paper meets plain water. What happens? (a) turns reddish-brown (b) stays yellow
  20. 20.🧺 Do we need a balloon for the turmeric test? (a) not needed (b) needed
  21. 21.🧺 Do we need a dropper or spoon for the turmeric test? (a) not needed (b) needed
  22. 22.🧺 Do we need a magnet for the turmeric test? (a) needed (b) not needed
  23. 23.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns blue (b) it turns black (c) it turns red (d) it stays yellow
  24. 24.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the number of drops (b) the liquid we test (c) the colour we see
  25. 25.⚖️ 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
  26. 26.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a magnet (b) water (c) lemon juice (d) turmeric powder
  27. 27.True or false: soap solution turns turmeric reddish-brown. (a) True (b) False
  28. 28.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a mirror (b) lemon juice (c) turmeric powder (d) white paper strips
  29. 29.🟡 Turmeric paper meets soap solution. What happens? (a) turns reddish-brown (b) stays yellow
  30. 30.True or false: lemon juice is needed for the turmeric test. (a) False (b) True
  31. 31.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is what we measure. (a) False (b) True
  32. 32.True or false: baking soda water is neutral. (a) True (b) False
  33. 33.🟡 Which of these turns turmeric reddish-brown? (a) sugar water (b) tamarind water (c) detergent water (d) lemon juice
  34. 34.🟡 Which of these keeps turmeric yellow? (a) baking soda water (b) salt water (c) detergent water (d) soap solution
  35. 35.🫧 Which of these is neutral? (a) curd (b) detergent water (c) tamarind water (d) plain water
  36. 36.🧺 Do we need lemon juice for the turmeric test? (a) needed (b) not needed
  37. 37.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the number of drops”? (a) we measure it (b) we keep it the same (c) we change it
  38. 38.🧺 Do we need a battery cell for the turmeric test? (a) needed (b) not needed
  39. 39.True or false: plain water is a base. (a) True (b) False
  40. 40.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the turmeric paper (b) the light we look in (c) the liquid we test (d) the colour we see

Answer key

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

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