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Turmeric Indicator Experiment Worksheet

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

Answer key

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

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