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Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 93 · 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 is the odd one out? (a) soap solution (b) sugar water (c) plain water (d) vinegar
  2. 2.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is what we measure. (a) True (b) False
  3. 3.🧺 Which of these is needed for the turmeric test? (a) a comb (b) turmeric powder (c) a balloon (d) yeast
  4. 4.🧺 Do we need a battery cell for the turmeric test? (a) not needed (b) needed
  5. 5.🛟 Which rule keeps the turmeric test safe? (a) mix bathroom cleaners (b) sniff each bottle hard (c) sip each liquid (d) use only kitchen items
  6. 6.True or false: baking soda water keeps turmeric yellow. (a) True (b) False
  7. 7.True or false: turmeric powder is needed for the turmeric test. (a) True (b) False
  8. 8.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a dropper or spoon (b) water (c) white paper strips (d) yeast
  9. 9.🔍 Which is the odd one out? (a) tamarind water (b) baking soda water (c) lemon juice (d) salt water
  10. 10.🟡 Turmeric paper meets salt water. What happens? (a) stays yellow (b) turns reddish-brown
  11. 11.🟡 Which of these turns turmeric reddish-brown? (a) sugar water (b) lemon juice (c) soap solution (d) salt water
  12. 12.🫧 Is detergent water an acid, a base or neutral? (a) an acid (b) a base (c) neutral
  13. 13.True or false: lemon juice is a base. (a) False (b) True
  14. 14.🧺 Which of these is needed for the turmeric test? (a) a magnet (b) a dropper or spoon (c) a comb (d) yeast
  15. 15.True or false: sugar water turns turmeric reddish-brown. (a) True (b) False
  16. 16.True or false: a mirror is needed for the turmeric test. (a) True (b) False
  17. 17.🧺 Which of these is needed for the turmeric test? (a) a magnet (b) yeast (c) a balloon (d) lemon juice
  18. 18.⚖️ 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 liquid we test (d) the colour we see
  19. 19.🧺 Which of these is needed for the turmeric test? (a) yeast (b) soap solution (c) a magnet (d) a balloon
  20. 20.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns black (b) it stays yellow (c) it turns blue (d) it turns red
  21. 21.🧺 Which of these is not needed for the turmeric test? (a) a dropper or spoon (b) soap solution (c) white paper strips (d) a battery cell
  22. 22.True or false: orange juice is neutral. (a) True (b) False
  23. 23.🧺 Do we need water for the turmeric test? (a) not needed (b) needed
  24. 24.🫧 Which of these is neutral? (a) lemon juice (b) baking soda water (c) tamarind water (d) sugar water
  25. 25.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is kept the same. (a) False (b) True
  26. 26.⚖️ 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 turmeric paper (c) the liquid we test (d) the number of drops
  27. 27.🧺 Do we need lemon juice for the turmeric test? (a) not needed (b) needed
  28. 28.🛟 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
  29. 29.🧺 Which of these is not needed for the turmeric test? (a) white paper strips (b) yeast (c) water (d) a dropper or spoon
  30. 30.🟡 Which of these keeps turmeric yellow? (a) sugar water (b) soap solution (c) detergent water (d) baking soda water
  31. 31.True or false: white paper strips is needed for the turmeric test. (a) True (b) False
  32. 32.🫧 Which of these is a base? (a) tamarind water (b) curd (c) baking soda water (d) sugar water
  33. 33.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) it stays white (b) reddish-brown (c) bright blue (d) green
  34. 34.🫧 Is soap solution an acid, a base or neutral? (a) an acid (b) neutral (c) a base
  35. 35.🧺 Which of these is needed for the turmeric test? (a) yeast (b) a comb (c) water (d) a battery cell
  36. 36.🧺 Do we need yeast for the turmeric test? (a) needed (b) not needed
  37. 37.🟡 Which of these turns turmeric reddish-brown? (a) vinegar (b) plain water (c) salt water (d) baking soda water
  38. 38.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the turmeric paper”? (a) we change it (b) we measure it (c) we keep it the same
  39. 39.True or false: soap solution is not needed for the turmeric test. (a) False (b) True
  40. 40.🧺 Do we need turmeric powder for the turmeric test? (a) needed (b) not needed

Answer key

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

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