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Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 480 · 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.

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

Answer key

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

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