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Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 912 · 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 turns turmeric paper reddish-brown? (a) sugar water (b) lemon juice (c) soap solution (d) vinegar
  2. 2.🛟 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
  3. 3.⚖️ 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 liquid we test (d) the colour we see
  4. 4.🧺 Do we need lemon juice for the turmeric test? (a) not needed (b) needed
  5. 5.True or false: sugar water is neutral. (a) True (b) False
  6. 6.⚖️ 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
  7. 7.🔍 Which is the odd one out? (a) salt water (b) lemon juice (c) detergent water (d) vinegar
  8. 8.🧺 Do we need water for the turmeric test? (a) needed (b) not needed
  9. 9.🟡 Turmeric paper meets salt water. What happens? (a) turns reddish-brown (b) stays yellow
  10. 10.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) a balloon (c) turmeric powder (d) white paper strips
  11. 11.🧺 Do we need a dropper or spoon for the turmeric test? (a) needed (b) not needed
  12. 12.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the turmeric paper (b) the colour we see (c) the liquid we test
  13. 13.🧺 Do we need a balloon for the turmeric test? (a) not needed (b) needed
  14. 14.🔍 Which is the odd one out? (a) baking soda water (b) soap solution (c) detergent water (d) tamarind water
  15. 15.True or false: soap solution is needed for the turmeric test. (a) False (b) True
  16. 16.🫧 Is curd an acid, a base or neutral? (a) neutral (b) an acid (c) a base
  17. 17.True or false: vinegar keeps turmeric yellow. (a) True (b) False
  18. 18.True or false: white paper strips is not needed for the turmeric test. (a) True (b) False
  19. 19.🟡 Which of these turns turmeric reddish-brown? (a) baking soda water (b) lemon juice (c) tamarind water (d) plain water
  20. 20.🟡 Turmeric paper meets vinegar. What happens? (a) stays yellow (b) turns reddish-brown
  21. 21.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) a comb (c) white paper strips (d) lemon juice
  22. 22.True or false: lemon juice is not needed for the turmeric test. (a) True (b) False
  23. 23.🫧 Is sugar water an acid, a base or neutral? (a) an acid (b) neutral (c) a base
  24. 24.🟡 Turmeric paper meets soap solution. What happens? (a) stays yellow (b) turns reddish-brown
  25. 25.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the colour we see”? (a) we measure it (b) we keep it the same (c) we change it
  26. 26.True or false: salt water keeps turmeric yellow. (a) True (b) False
  27. 27.True or false: plain water turns turmeric reddish-brown. (a) True (b) False
  28. 28.⚖️ 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 keep it the same (c) we measure it
  29. 29.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the liquid we test”? (a) we measure it (b) we keep it the same (c) we change it
  30. 30.🟡 Which of these turns turmeric reddish-brown? (a) sugar water (b) salt water (c) soap solution (d) plain water
  31. 31.🛟 Turmeric stains clothes. What should you wear? (a) a white party dress (b) an old shirt or apron (c) your school uniform (d) your best clothes
  32. 32.🧺 Do we need a magnet for the turmeric test? (a) not needed (b) needed
  33. 33.🧺 Do we need a comb for the turmeric test? (a) needed (b) not needed
  34. 34.🟡 Which of these keeps turmeric yellow? (a) soap solution (b) baking soda water (c) detergent water (d) lemon juice
  35. 35.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) reddish-brown (b) it turns blue (c) it stays yellow (d) it turns green
  36. 36.🫧 Which of these is neutral? (a) vinegar (b) detergent water (c) plain water (d) soap solution
  37. 37.True or false: baking soda water keeps turmeric yellow. (a) True (b) False
  38. 38.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a magnet (b) soap solution (c) white paper strips (d) a dropper or spoon
  39. 39.🫧 Is vinegar an acid, a base or neutral? (a) a base (b) an acid (c) neutral
  40. 40.🫧 Which of these is an acid? (a) tamarind water (b) salt water (c) soap solution (d) baking soda water

Answer key

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

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