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Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 734 · 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.🟡 Turmeric paper meets soap solution. What happens? (a) stays yellow (b) turns reddish-brown
  2. 2.True or false: yeast is needed for the turmeric test. (a) True (b) False
  3. 3.True or false: vinegar keeps turmeric yellow. (a) False (b) True
  4. 4.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the colour we see (b) the liquid we test (c) the light we look in (d) the turmeric paper
  5. 5.🧺 Do we need yeast for the turmeric test? (a) needed (b) not needed
  6. 6.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the light we look in is what we measure. (a) False (b) True
  7. 7.True or false: turmeric powder is needed for the turmeric test. (a) True (b) False
  8. 8.🧺 Do we need soap solution for the turmeric test? (a) not needed (b) needed
  9. 9.🫧 Which of these is an acid? (a) baking soda water (b) soap solution (c) sugar water (d) lemon juice
  10. 10.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the light we look in (b) the turmeric paper (c) the liquid we test (d) the number of drops
  11. 11.🧺 Which of these is needed for the turmeric test? (a) a mirror (b) yeast (c) a balloon (d) soap solution
  12. 12.🧺 Do we need a dropper or spoon for the turmeric test? (a) needed (b) not needed
  13. 13.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the colour we see”? (a) we change it (b) we keep it the same (c) we measure it
  14. 14.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the number of drops”? (a) we keep it the same (b) we change it (c) we measure it
  15. 15.🫧 Which of these is a base? (a) lemon juice (b) sugar water (c) vinegar (d) detergent water
  16. 16.True or false: a balloon is not needed for the turmeric test. (a) True (b) False
  17. 17.🧺 Do we need a battery cell for the turmeric test? (a) needed (b) not needed
  18. 18.True or false: curd is a base. (a) False (b) True
  19. 19.🧺 Do we need white paper strips for the turmeric test? (a) not needed (b) needed
  20. 20.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is kept the same. (a) True (b) False
  21. 21.🔍 Which is the odd one out? (a) plain water (b) lemon juice (c) detergent water (d) vinegar
  22. 22.True or false: a dropper or spoon is needed for the turmeric test. (a) False (b) True
  23. 23.True or false: white paper strips is needed for the turmeric test. (a) False (b) True
  24. 24.🍋 A reddish turmeric spot gets a few drops of lemon juice. What happens? (a) it turns yellow again (b) it turns darker red (c) it disappears (d) it turns blue
  25. 25.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the turmeric paper”? (a) we change it (b) we keep it the same (c) we measure it
  26. 26.🟡 Turmeric paper meets plain water. What happens? (a) turns reddish-brown (b) stays yellow
  27. 27.🧺 Which of these is needed for the turmeric test? (a) lemon juice (b) a balloon (c) a magnet (d) a mirror
  28. 28.🟡 Turmeric paper meets sugar water. What happens? (a) turns reddish-brown (b) stays yellow
  29. 29.🧺 Which of these is needed for the turmeric test? (a) turmeric powder (b) a mirror (c) a balloon (d) a magnet
  30. 30.True or false: a dropper or spoon is not needed for the turmeric test. (a) False (b) True
  31. 31.True or false: salt water is an acid. (a) False (b) True
  32. 32.True or false: detergent water turns turmeric reddish-brown. (a) False (b) True
  33. 33.🫧 Is soap solution an acid, a base or neutral? (a) neutral (b) a base (c) an acid
  34. 34.🔍 Which is the odd one out? (a) baking soda water (b) salt water (c) vinegar (d) tamarind water
  35. 35.True or false: sugar water keeps turmeric yellow. (a) True (b) False
  36. 36.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) white paper strips (b) soap solution (c) a balloon (d) water
  37. 37.🫧 Which of these is an acid? (a) soap solution (b) salt water (c) orange juice (d) baking soda water
  38. 38.🧺 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) a mirror
  39. 39.True or false: baking soda water turns turmeric reddish-brown. (a) True (b) False
  40. 40.🧺 Do we need a mirror for the turmeric test? (a) needed (b) not needed

Answer key

  1. turns reddish-brown
  2. False
  3. True
  4. the colour we see
  5. not needed
  6. False
  7. True
  8. needed
  9. lemon juice
  10. the liquid we test
  11. soap solution
  12. needed
  13. we measure it
  14. we keep it the same
  15. detergent water
  16. True
  17. not needed
  18. False
  19. needed
  20. True
  21. detergent water
  22. True
  23. True
  24. it turns yellow again
  25. we keep it the same
  26. stays yellow
  27. lemon juice
  28. stays yellow
  29. turmeric powder
  30. False
  31. False
  32. True
  33. a base
  34. baking soda water
  35. True
  36. a balloon
  37. orange juice
  38. a mirror
  39. True
  40. not needed

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