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Turmeric Indicator Experiment Worksheet

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

Answer key

  1. use only kitchen items
  2. lemon juice
  3. a magnet
  4. True
  5. False
  6. a balloon
  7. an acid
  8. we keep it the same
  9. False
  10. needed
  11. a magnet
  12. True
  13. a balloon
  14. True
  15. turns reddish-brown
  16. stays yellow
  17. orange juice
  18. plain water
  19. stays yellow
  20. it stays yellow
  21. yeast
  22. a mirror
  23. True
  24. False
  25. not needed
  26. tamarind water
  27. the light we look in
  28. a base
  29. white paper strips
  30. we change it
  31. a comb
  32. a battery cell
  33. detergent water
  34. baking soda water
  35. needed
  36. a battery cell
  37. False
  38. a dropper or spoon
  39. True
  40. turns reddish-brown

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