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Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 728 · 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: salt water turns turmeric reddish-brown. (a) False (b) True
  2. 2.🧺 Do we need a mirror for the turmeric test? (a) needed (b) not needed
  3. 3.🛟 Turmeric stains clothes. What should you wear? (a) your school uniform (b) an old shirt or apron (c) a white party dress (d) your best clothes
  4. 4.🫧 Which of these is an acid? (a) detergent water (b) plain water (c) orange juice (d) soap solution
  5. 5.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is the one thing we change. (a) True (b) False
  6. 6.True or false: tamarind water turns turmeric reddish-brown. (a) False (b) True
  7. 7.🧺 Which of these is needed for the turmeric test? (a) a mirror (b) yeast (c) a magnet (d) lemon juice
  8. 8.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) turmeric powder (c) a balloon (d) white paper strips
  9. 9.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) it stays white (b) reddish-brown (c) green (d) bright blue
  10. 10.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns blue (b) it turns red (c) it turns black (d) it stays yellow
  11. 11.True or false: turmeric powder is needed for the turmeric test. (a) True (b) False
  12. 12.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) white at once (b) bright blue (c) reddish (d) green
  13. 13.🧺 Do we need a dropper or spoon for the turmeric test? (a) needed (b) not needed
  14. 14.🔍 Which is the odd one out? (a) detergent water (b) sugar water (c) vinegar (d) lemon juice
  15. 15.🟡 Turmeric paper meets detergent water. What happens? (a) stays yellow (b) turns reddish-brown
  16. 16.🟡 Which of these keeps turmeric yellow? (a) soap solution (b) lemon juice (c) detergent water (d) baking soda water
  17. 17.🟡 Turmeric paper meets plain water. What happens? (a) stays yellow (b) turns reddish-brown
  18. 18.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a magnet (b) soap solution (c) turmeric powder (d) a dropper or spoon
  19. 19.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a battery cell (b) turmeric powder (c) a dropper or spoon (d) water
  20. 20.🟡 Which of these turns turmeric paper reddish-brown? (a) vinegar (b) sugar water (c) soap solution (d) lemon juice
  21. 21.True or false: baking soda water keeps turmeric yellow. (a) False (b) True
  22. 22.🟡 Turmeric paper meets soap solution. What happens? (a) turns reddish-brown (b) stays yellow
  23. 23.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is kept the same. (a) False (b) True
  24. 24.True or false: lemon juice is an acid. (a) False (b) True
  25. 25.🫧 Is sugar water an acid, a base or neutral? (a) an acid (b) neutral (c) a base
  26. 26.🧺 Do we need white paper strips for the turmeric test? (a) needed (b) not needed
  27. 27.🛟 Which rule keeps the turmeric test safe? (a) use only kitchen items (b) mix bathroom cleaners (c) sniff each bottle hard (d) sip each liquid
  28. 28.🫧 Is detergent water an acid, a base or neutral? (a) a base (b) neutral (c) an acid
  29. 29.🧺 Which of these is not needed for the turmeric test? (a) white paper strips (b) water (c) turmeric powder (d) a balloon
  30. 30.🫧 Which of these is a base? (a) vinegar (b) tamarind water (c) plain water (d) soap solution
  31. 31.🧺 Do we need a battery cell for the turmeric test? (a) not needed (b) needed
  32. 32.🧺 Do we need lemon juice for the turmeric test? (a) not needed (b) needed
  33. 33.🔍 Which is the odd one out? (a) sugar water (b) salt water (c) baking soda water (d) vinegar
  34. 34.🔮 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
  35. 35.🫧 Is soap solution an acid, a base or neutral? (a) a base (b) an acid (c) neutral
  36. 36.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the colour we see”? (a) we measure it (b) we change it (c) we keep it the same
  37. 37.🫧 Which of these is an acid? (a) vinegar (b) baking soda water (c) plain water (d) detergent water
  38. 38.True or false: yeast is not needed for the turmeric test. (a) True (b) False
  39. 39.True or false: yeast is needed for the turmeric test. (a) True (b) False
  40. 40.⚖️ 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

Answer key

  1. False
  2. not needed
  3. an old shirt or apron
  4. orange juice
  5. False
  6. False
  7. lemon juice
  8. a balloon
  9. reddish-brown
  10. it stays yellow
  11. True
  12. reddish
  13. needed
  14. detergent water
  15. turns reddish-brown
  16. lemon juice
  17. stays yellow
  18. a magnet
  19. a battery cell
  20. soap solution
  21. False
  22. turns reddish-brown
  23. False
  24. True
  25. neutral
  26. needed
  27. use only kitchen items
  28. a base
  29. a balloon
  30. soap solution
  31. not needed
  32. needed
  33. baking soda water
  34. reddish-brown
  35. a base
  36. we measure it
  37. vinegar
  38. True
  39. False
  40. we keep it the same

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