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Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 412 · 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.True or false: a dropper or spoon is not needed for the turmeric test. (a) False (b) True
  2. 2.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the turmeric paper (b) the liquid we test (c) the light we look in (d) the colour we see
  3. 3.True or false: lemon juice is a base. (a) False (b) True
  4. 4.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) a dropper or spoon (c) a mirror (d) water
  5. 5.🛟 Which rule keeps the turmeric test safe? (a) sip each liquid (b) mix bathroom cleaners (c) use only kitchen items (d) sniff each bottle hard
  6. 6.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is kept the same. (a) False (b) True
  7. 7.True or false: salt water keeps turmeric yellow. (a) True (b) False
  8. 8.🔍 Which is the odd one out? (a) vinegar (b) sugar water (c) detergent water (d) plain water
  9. 9.🔍 Which is the odd one out? (a) detergent water (b) sugar water (c) baking soda water (d) soap solution
  10. 10.🟡 Which of these turns turmeric paper reddish-brown? (a) sugar water (b) vinegar (c) lemon juice (d) soap solution
  11. 11.🧺 Do we need turmeric powder for the turmeric test? (a) needed (b) not needed
  12. 12.🧺 Do we need water for the turmeric test? (a) needed (b) not needed
  13. 13.🧺 Do we need lemon juice for the turmeric test? (a) not needed (b) needed
  14. 14.True or false: a mirror is not needed for the turmeric test. (a) False (b) True
  15. 15.🫧 Is tamarind water an acid, a base or neutral? (a) neutral (b) a base (c) an acid
  16. 16.🫧 Is curd an acid, a base or neutral? (a) neutral (b) a base (c) an acid
  17. 17.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the turmeric paper”? (a) we measure it (b) we change it (c) we keep it the same
  18. 18.🔮 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
  19. 19.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns blue (b) it turns black (c) it stays yellow (d) it turns red
  20. 20.🟡 Turmeric paper meets sugar water. What happens? (a) stays yellow (b) turns reddish-brown
  21. 21.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the turmeric paper (b) the number of drops (c) the colour we see (d) the liquid we test
  22. 22.True or false: lemon juice turns turmeric reddish-brown. (a) False (b) True
  23. 23.True or false: vinegar turns turmeric reddish-brown. (a) True (b) False
  24. 24.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is kept the same. (a) False (b) True
  25. 25.🧺 Which of these is needed for the turmeric test? (a) a mirror (b) a balloon (c) yeast (d) turmeric powder
  26. 26.🟡 Why does soap solution change turmeric’s colour? (a) soap is magnetic (b) soap is hot (c) soap water is a base (d) soap is an acid
  27. 27.True or false: a comb is needed for the turmeric test. (a) False (b) True
  28. 28.🧺 Do we need a mirror for the turmeric test? (a) not needed (b) needed
  29. 29.🧺 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
  30. 30.True or false: a balloon is needed for the turmeric test. (a) True (b) False
  31. 31.🧺 Which of these is needed for the turmeric test? (a) a mirror (b) a comb (c) a magnet (d) soap solution
  32. 32.🟡 Which of these turns turmeric reddish-brown? (a) salt water (b) lemon juice (c) detergent water (d) vinegar
  33. 33.🧺 Do we need a magnet for the turmeric test? (a) needed (b) not needed
  34. 34.🧺 Which of these is needed for the turmeric test? (a) water (b) a magnet (c) a mirror (d) a battery cell
  35. 35.🫧 Which of these is an acid? (a) soap solution (b) detergent water (c) plain water (d) curd
  36. 36.🧺 Which of these is not needed for the turmeric test? (a) water (b) turmeric powder (c) a balloon (d) white paper strips
  37. 37.True or false: tamarind water turns turmeric reddish-brown. (a) False (b) True
  38. 38.⚖️ 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
  39. 39.🫧 Which of these is an acid? (a) baking soda water (b) soap solution (c) plain water (d) orange juice
  40. 40.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) a balloon (c) turmeric powder (d) water

Answer key

  1. False
  2. the liquid we test
  3. False
  4. a mirror
  5. use only kitchen items
  6. False
  7. True
  8. detergent water
  9. sugar water
  10. soap solution
  11. needed
  12. needed
  13. needed
  14. True
  15. an acid
  16. an acid
  17. we keep it the same
  18. reddish-brown
  19. it stays yellow
  20. stays yellow
  21. the colour we see
  22. False
  23. False
  24. True
  25. turmeric powder
  26. soap water is a base
  27. False
  28. not needed
  29. a battery cell
  30. False
  31. soap solution
  32. detergent water
  33. not needed
  34. water
  35. curd
  36. a balloon
  37. False
  38. we change it
  39. orange juice
  40. a balloon

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