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Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 346 · 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: white paper strips is needed for the turmeric test. (a) True (b) False
  2. 2.True or false: soap solution is needed for the turmeric test. (a) False (b) True
  3. 3.🟡 Which of these keeps turmeric yellow? (a) soap solution (b) tamarind water (c) baking soda water (d) detergent water
  4. 4.🧺 Do we need a battery cell for the turmeric test? (a) not needed (b) needed
  5. 5.🛟 Which rule keeps the turmeric test safe? (a) mix bathroom cleaners (b) use only kitchen items (c) sniff each bottle hard (d) sip each liquid
  6. 6.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) bright blue (b) green (c) white at once (d) reddish
  7. 7.🔍 Which is the odd one out? (a) baking soda water (b) detergent water (c) sugar water (d) soap solution
  8. 8.🧺 Which of these is needed for the turmeric test? (a) soap solution (b) a magnet (c) a mirror (d) a balloon
  9. 9.True or false: tamarind water keeps turmeric yellow. (a) True (b) False
  10. 10.🫧 Is baking soda water an acid, a base or neutral? (a) neutral (b) an acid (c) a base
  11. 11.True or false: a battery cell is not needed for the turmeric test. (a) True (b) False
  12. 12.True or false: lemon juice is needed for the turmeric test. (a) False (b) True
  13. 13.⚖️ 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
  14. 14.🔮 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
  15. 15.True or false: salt water turns turmeric reddish-brown. (a) False (b) True
  16. 16.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) reddish-brown (b) green (c) it stays white (d) bright blue
  17. 17.True or false: a balloon is needed for the turmeric test. (a) False (b) True
  18. 18.🔍 Which is the odd one out? (a) tamarind water (b) vinegar (c) detergent water (d) sugar water
  19. 19.True or false: sugar water turns turmeric reddish-brown. (a) True (b) False
  20. 20.True or false: tamarind water turns turmeric reddish-brown. (a) False (b) True
  21. 21.True or false: curd is a base. (a) False (b) True
  22. 22.🟡 Which of these turns turmeric reddish-brown? (a) baking soda water (b) lemon juice (c) tamarind water (d) sugar water
  23. 23.🔍 Which is the odd one out? (a) detergent water (b) soap solution (c) baking soda water (d) plain water
  24. 24.🧺 Do we need water for the turmeric test? (a) not needed (b) needed
  25. 25.🧺 Do we need a mirror for the turmeric test? (a) needed (b) not needed
  26. 26.True or false: vinegar is an acid. (a) True (b) False
  27. 27.True or false: a magnet is needed for the turmeric test. (a) False (b) True
  28. 28.True or false: plain water keeps turmeric yellow. (a) False (b) True
  29. 29.True or false: yeast is needed for the turmeric test. (a) False (b) True
  30. 30.🧺 Do we need white paper strips for the turmeric test? (a) not needed (b) needed
  31. 31.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a dropper or spoon (b) soap solution (c) water (d) yeast
  32. 32.True or false: sugar water is a base. (a) False (b) True
  33. 33.True or false: a comb is not needed for the turmeric test. (a) False (b) True
  34. 34.🟡 Turmeric paper meets sugar water. What happens? (a) turns reddish-brown (b) stays yellow
  35. 35.🫧 Which of these is an acid? (a) sugar water (b) baking soda water (c) detergent water (d) tamarind water
  36. 36.🔍 Which is the odd one out? (a) sugar water (b) plain water (c) soap solution (d) salt water
  37. 37.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is what we measure. (a) False (b) True
  38. 38.🟡 Turmeric paper meets plain water. What happens? (a) turns reddish-brown (b) stays yellow
  39. 39.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) white paper strips (c) soap solution (d) a magnet
  40. 40.🟡 Why does soap solution change turmeric’s colour? (a) soap is magnetic (b) soap is an acid (c) soap water is a base (d) soap is hot

Answer key

  1. True
  2. True
  3. tamarind water
  4. not needed
  5. use only kitchen items
  6. reddish
  7. sugar water
  8. soap solution
  9. True
  10. a base
  11. True
  12. True
  13. we change it
  14. reddish-brown
  15. False
  16. reddish-brown
  17. False
  18. detergent water
  19. False
  20. False
  21. False
  22. baking soda water
  23. plain water
  24. needed
  25. not needed
  26. True
  27. False
  28. True
  29. False
  30. needed
  31. yeast
  32. False
  33. True
  34. stays yellow
  35. tamarind water
  36. soap solution
  37. False
  38. stays yellow
  39. a magnet
  40. soap water is a base

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