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Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 527 · 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.🫧 Which of these is an acid? (a) baking soda water (b) plain water (c) lemon juice (d) salt water
  2. 2.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is kept the same. (a) True (b) False
  3. 3.🟡 Which of these turns turmeric reddish-brown? (a) sugar water (b) tamarind water (c) lemon juice (d) baking soda water
  4. 4.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) white paper strips (c) a comb (d) a dropper or spoon
  5. 5.🧺 Which of these is not needed for the turmeric test? (a) soap solution (b) white paper strips (c) turmeric powder (d) yeast
  6. 6.🟡 Which of these keeps turmeric yellow? (a) soap solution (b) detergent water (c) lemon juice (d) baking soda water
  7. 7.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it turns blue (b) reddish-brown (c) it turns green (d) it stays yellow
  8. 8.🟡 Turmeric paper meets detergent water. What happens? (a) stays yellow (b) turns reddish-brown
  9. 9.🫧 Is lemon juice an acid, a base or neutral? (a) a base (b) an acid (c) neutral
  10. 10.True or false: detergent water keeps turmeric yellow. (a) True (b) False
  11. 11.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a mirror (b) water (c) a dropper or spoon (d) turmeric powder
  12. 12.🧺 Do we need a comb for the turmeric test? (a) needed (b) not needed
  13. 13.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns blue (b) it stays yellow (c) it turns red (d) it turns black
  14. 14.🧺 Do we need a mirror for the turmeric test? (a) not needed (b) needed
  15. 15.🫧 Is orange juice an acid, a base or neutral? (a) an acid (b) a base (c) neutral
  16. 16.True or false: salt water keeps turmeric yellow. (a) True (b) False
  17. 17.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the liquid we test (b) the turmeric paper (c) the colour we see (d) the number of drops
  18. 18.🫧 Is sugar water an acid, a base or neutral? (a) a base (b) an acid (c) neutral
  19. 19.🫧 Is plain water an acid, a base or neutral? (a) a base (b) an acid (c) neutral
  20. 20.🛟 Turmeric stains clothes. What should you wear? (a) your school uniform (b) a white party dress (c) your best clothes (d) an old shirt or apron
  21. 21.🫧 Is salt water an acid, a base or neutral? (a) an acid (b) neutral (c) a base
  22. 22.🔍 Which is the odd one out? (a) soap solution (b) baking soda water (c) detergent water (d) plain water
  23. 23.🧺 Do we need a dropper or spoon for the turmeric test? (a) not needed (b) needed
  24. 24.True or false: a magnet is not needed for the turmeric test. (a) True (b) False
  25. 25.🟡 Why does soap solution change turmeric’s colour? (a) soap is magnetic (b) soap is hot (c) soap is an acid (d) soap water is a base
  26. 26.True or false: vinegar keeps turmeric yellow. (a) False (b) True
  27. 27.🧺 Which of these is needed for the turmeric test? (a) yeast (b) a dropper or spoon (c) a mirror (d) a comb
  28. 28.🔍 Which is the odd one out? (a) salt water (b) detergent water (c) plain water (d) lemon juice
  29. 29.🧺 Which of these is needed for the turmeric test? (a) a comb (b) a magnet (c) yeast (d) white paper strips
  30. 30.🟡 Which of these keeps turmeric yellow? (a) detergent water (b) baking soda water (c) salt water (d) soap solution
  31. 31.🫧 Which of these is a base? (a) soap solution (b) plain water (c) salt water (d) vinegar
  32. 32.🟡 Which of these turns turmeric reddish-brown? (a) salt water (b) lemon juice (c) plain water (d) detergent water
  33. 33.⚖️ 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
  34. 34.True or false: a comb is needed for the turmeric test. (a) True (b) False
  35. 35.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) white paper strips (b) turmeric powder (c) a dropper or spoon (d) yeast
  36. 36.🔍 Which is the odd one out? (a) lemon juice (b) baking soda water (c) sugar water (d) plain water
  37. 37.True or false: white paper strips is needed for the turmeric test. (a) True (b) False
  38. 38.🧺 Do we need a magnet for the turmeric test? (a) needed (b) not needed
  39. 39.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a dropper or spoon (b) a magnet (c) turmeric powder (d) white paper strips
  40. 40.🟡 Which of these keeps turmeric yellow? (a) sugar water (b) baking soda water (c) detergent water (d) soap solution

Answer key

  1. lemon juice
  2. False
  3. baking soda water
  4. a comb
  5. yeast
  6. lemon juice
  7. reddish-brown
  8. turns reddish-brown
  9. an acid
  10. False
  11. a mirror
  12. not needed
  13. it stays yellow
  14. not needed
  15. an acid
  16. True
  17. the liquid we test
  18. neutral
  19. neutral
  20. an old shirt or apron
  21. neutral
  22. plain water
  23. needed
  24. True
  25. soap water is a base
  26. True
  27. a dropper or spoon
  28. detergent water
  29. white paper strips
  30. salt water
  31. soap solution
  32. detergent water
  33. True
  34. False
  35. yeast
  36. baking soda water
  37. True
  38. not needed
  39. a magnet
  40. sugar water

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