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Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 197 · 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.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it stays yellow (b) it turns blue (c) reddish-brown (d) it turns green
  2. 2.🫧 Which of these is neutral? (a) lemon juice (b) vinegar (c) salt water (d) baking soda water
  3. 3.🧺 Which of these is not needed for the turmeric test? (a) water (b) a magnet (c) a dropper or spoon (d) white paper strips
  4. 4.🧺 Do we need a dropper or spoon for the turmeric test? (a) not needed (b) needed
  5. 5.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the colour we see (b) the light we look in (c) the turmeric paper (d) the number of drops
  6. 6.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the number of drops”? (a) we change it (b) we measure it (c) we keep it the same
  7. 7.🔍 Which is the odd one out? (a) lemon juice (b) vinegar (c) detergent water (d) sugar water
  8. 8.True or false: a dropper or spoon is needed for the turmeric test. (a) False (b) True
  9. 9.True or false: a comb is not needed for the turmeric test. (a) False (b) True
  10. 10.🟡 Turmeric paper meets lemon juice. What happens? (a) turns reddish-brown (b) stays yellow
  11. 11.🟡 Which of these keeps turmeric yellow? (a) baking soda water (b) detergent water (c) plain water (d) soap solution
  12. 12.⚖️ 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 measure it (c) we change it
  13. 13.🫧 Which of these is an acid? (a) soap solution (b) salt water (c) detergent water (d) tamarind water
  14. 14.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) turmeric powder (c) lemon juice (d) a balloon
  15. 15.🔍 Which is the odd one out? (a) sugar water (b) tamarind water (c) soap solution (d) lemon juice
  16. 16.🟡 Turmeric paper meets vinegar. What happens? (a) turns reddish-brown (b) stays yellow
  17. 17.True or false: soap solution is an acid. (a) True (b) False
  18. 18.🫧 Is lemon juice an acid, a base or neutral? (a) neutral (b) an acid (c) a base
  19. 19.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is the one thing we change. (a) False (b) True
  20. 20.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) soap solution (c) a magnet (d) turmeric powder
  21. 21.🛟 Which rule keeps the turmeric test safe? (a) mix bathroom cleaners (b) sip each liquid (c) sniff each bottle hard (d) use only kitchen items
  22. 22.🟡 Turmeric paper meets baking soda water. What happens? (a) stays yellow (b) turns reddish-brown
  23. 23.🫧 Is vinegar an acid, a base or neutral? (a) a base (b) neutral (c) an acid
  24. 24.True or false: water is needed for the turmeric test. (a) False (b) True
  25. 25.True or false: soap solution keeps turmeric yellow. (a) False (b) True
  26. 26.True or false: vinegar turns turmeric reddish-brown. (a) False (b) True
  27. 27.🧺 Which of these is needed for the turmeric test? (a) yeast (b) a battery cell (c) a balloon (d) water
  28. 28.🟡 Which of these turns turmeric paper reddish-brown? (a) lemon juice (b) vinegar (c) sugar water (d) soap solution
  29. 29.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns blue (b) it turns black (c) it turns red (d) it stays yellow
  30. 30.True or false: vinegar keeps turmeric yellow. (a) True (b) False
  31. 31.🟡 Turmeric paper meets detergent water. What happens? (a) turns reddish-brown (b) stays yellow
  32. 32.🔍 Which is the odd one out? (a) soap solution (b) detergent water (c) lemon juice (d) baking soda water
  33. 33.🔍 Which is the odd one out? (a) soap solution (b) baking soda water (c) detergent water (d) vinegar
  34. 34.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) white paper strips (b) turmeric powder (c) water (d) a battery cell
  35. 35.True or false: curd is neutral. (a) False (b) True
  36. 36.🟡 Which of these keeps turmeric yellow? (a) baking soda water (b) soap solution (c) sugar water (d) detergent water
  37. 37.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) yeast (b) turmeric powder (c) white paper strips (d) a dropper or spoon
  38. 38.🟡 Turmeric paper meets tamarind water. What happens? (a) turns reddish-brown (b) stays yellow
  39. 39.🫧 Which of these is an acid? (a) salt water (b) orange juice (c) soap solution (d) baking soda water
  40. 40.True or false: orange juice is neutral. (a) False (b) True

Answer key

  1. reddish-brown
  2. salt water
  3. a magnet
  4. needed
  5. the colour we see
  6. we keep it the same
  7. detergent water
  8. True
  9. True
  10. stays yellow
  11. plain water
  12. we change it
  13. tamarind water
  14. a balloon
  15. soap solution
  16. stays yellow
  17. False
  18. an acid
  19. True
  20. a magnet
  21. use only kitchen items
  22. turns reddish-brown
  23. an acid
  24. True
  25. False
  26. False
  27. water
  28. soap solution
  29. it stays yellow
  30. True
  31. turns reddish-brown
  32. lemon juice
  33. vinegar
  34. a battery cell
  35. False
  36. sugar water
  37. yeast
  38. stays yellow
  39. orange juice
  40. False

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