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Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 592 · 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 what we measure? (a) the turmeric paper (b) the light we look in (c) the colour we see (d) the liquid we test
  2. 2.🔍 Which is the odd one out? (a) tamarind water (b) sugar water (c) soap solution (d) vinegar
  3. 3.🛟 Which rule keeps the turmeric test safe? (a) use only kitchen items (b) sniff each bottle hard (c) mix bathroom cleaners (d) sip each liquid
  4. 4.🫧 Is plain water an acid, a base or neutral? (a) an acid (b) neutral (c) a base
  5. 5.True or false: a comb is not needed for the turmeric test. (a) False (b) True
  6. 6.🔍 Which is the odd one out? (a) detergent water (b) plain water (c) soap solution (d) baking soda water
  7. 7.True or false: detergent water is an acid. (a) False (b) True
  8. 8.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a dropper or spoon (b) white paper strips (c) a battery cell (d) soap solution
  9. 9.🫧 Which of these is a base? (a) vinegar (b) detergent water (c) sugar water (d) salt water
  10. 10.🟡 Turmeric paper meets sugar water. What happens? (a) stays yellow (b) turns reddish-brown
  11. 11.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is the one thing we change. (a) False (b) True
  12. 12.True or false: plain water keeps turmeric yellow. (a) True (b) False
  13. 13.🟡 Turmeric paper meets detergent water. What happens? (a) stays yellow (b) turns reddish-brown
  14. 14.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a dropper or spoon (b) white paper strips (c) soap solution (d) a balloon
  15. 15.🟡 Turmeric paper meets baking soda water. What happens? (a) stays yellow (b) turns reddish-brown
  16. 16.True or false: a magnet is not needed for the turmeric test. (a) False (b) True
  17. 17.🧺 Do we need a comb for the turmeric test? (a) not needed (b) needed
  18. 18.🧺 Do we need soap solution for the turmeric test? (a) needed (b) not needed
  19. 19.🧺 Do we need turmeric powder for the turmeric test? (a) needed (b) not needed
  20. 20.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is the one thing we change. (a) True (b) False
  21. 21.🧺 Which of these is needed for the turmeric test? (a) yeast (b) white paper strips (c) a mirror (d) a battery cell
  22. 22.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) reddish-brown (b) it stays yellow (c) it turns blue (d) it turns green
  23. 23.True or false: salt water is neutral. (a) False (b) True
  24. 24.🧺 Do we need yeast for the turmeric test? (a) needed (b) not needed
  25. 25.🧺 Which of these is needed for the turmeric test? (a) turmeric powder (b) a balloon (c) yeast (d) a comb
  26. 26.🍋 A drop of lemon juice falls on turmeric paper. What happens? (a) it turns red (b) it turns blue (c) it turns black (d) it stays yellow
  27. 27.🟡 Which of these keeps turmeric yellow? (a) detergent water (b) baking soda water (c) soap solution (d) tamarind water
  28. 28.🧺 Do we need white paper strips for the turmeric test? (a) needed (b) not needed
  29. 29.🫧 Which of these is neutral? (a) baking soda water (b) salt water (c) soap solution (d) vinegar
  30. 30.🟡 Why does soap solution change turmeric’s colour? (a) soap is magnetic (b) soap water is a base (c) soap is an acid (d) soap is hot
  31. 31.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is kept the same. (a) False (b) True
  32. 32.🧺 Which of these is not needed for the turmeric test? (a) soap solution (b) a dropper or spoon (c) a battery cell (d) white paper strips
  33. 33.🫧 Is detergent water an acid, a base or neutral? (a) neutral (b) an acid (c) a base
  34. 34.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) soap solution (c) white paper strips (d) a magnet
  35. 35.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is kept the same. (a) True (b) False
  36. 36.True or false: soap solution is an acid. (a) True (b) False
  37. 37.True or false: a balloon is needed for the turmeric test. (a) True (b) False
  38. 38.⚖️ 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 change it (c) we keep it the same
  39. 39.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) it stays white (b) reddish-brown (c) bright blue (d) green
  40. 40.True or false: orange juice is an acid. (a) False (b) True

Answer key

  1. the colour we see
  2. soap solution
  3. use only kitchen items
  4. neutral
  5. True
  6. plain water
  7. False
  8. a battery cell
  9. detergent water
  10. stays yellow
  11. False
  12. True
  13. turns reddish-brown
  14. a balloon
  15. turns reddish-brown
  16. True
  17. not needed
  18. needed
  19. needed
  20. True
  21. white paper strips
  22. reddish-brown
  23. True
  24. not needed
  25. turmeric powder
  26. it stays yellow
  27. tamarind water
  28. needed
  29. salt water
  30. soap water is a base
  31. True
  32. a battery cell
  33. a base
  34. a magnet
  35. True
  36. False
  37. False
  38. we keep it the same
  39. reddish-brown
  40. True

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