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Turmeric Indicator Experiment Worksheet

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

Answer key

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

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