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Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 406 · 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.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the light we look in (b) the liquid we test (c) the colour we see
  2. 2.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) water (c) a dropper or spoon (d) a comb
  3. 3.🟡 Turmeric paper meets vinegar. What happens? (a) stays yellow (b) turns reddish-brown
  4. 4.⚖️ 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 number of drops (d) the light we look in
  5. 5.🧺 Do we need soap solution for the turmeric test? (a) needed (b) not needed
  6. 6.🟡 Why does soap solution change turmeric’s colour? (a) soap is hot (b) soap water is a base (c) soap is an acid (d) soap is magnetic
  7. 7.🔍 Which is the odd one out? (a) baking soda water (b) soap solution (c) detergent water (d) tamarind water
  8. 8.🧺 Which of these is not needed for the turmeric test? (a) soap solution (b) yeast (c) white paper strips (d) a dropper or spoon
  9. 9.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) soap solution (c) yeast (d) white paper strips
  10. 10.🫧 Is baking soda water an acid, a base or neutral? (a) an acid (b) neutral (c) a base
  11. 11.True or false: water is needed for the turmeric test. (a) True (b) False
  12. 12.🛟 Which rule keeps the turmeric test safe? (a) sip each liquid (b) mix bathroom cleaners (c) sniff each bottle hard (d) use only kitchen items
  13. 13.True or false: baking soda water turns turmeric reddish-brown. (a) False (b) True
  14. 14.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the number of drops”? (a) we measure it (b) we change it (c) we keep it the same
  15. 15.🧺 Do we need yeast for the turmeric test? (a) not needed (b) needed
  16. 16.🔮 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
  17. 17.True or false: lemon juice is not needed for the turmeric test. (a) True (b) False
  18. 18.🛟 Turmeric stains clothes. What should you wear? (a) a white party dress (b) your school uniform (c) your best clothes (d) an old shirt or apron
  19. 19.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) bright blue (b) reddish-brown (c) it stays white (d) green
  20. 20.🫧 Is soap solution an acid, a base or neutral? (a) neutral (b) a base (c) an acid
  21. 21.🔍 Which is the odd one out? (a) lemon juice (b) plain water (c) tamarind water (d) soap solution
  22. 22.⚖️ 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
  23. 23.True or false: turmeric powder is not needed for the turmeric test. (a) True (b) False
  24. 24.🧺 Which of these is needed for the turmeric test? (a) yeast (b) water (c) a comb (d) a mirror
  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.🫧 Is orange juice an acid, a base or neutral? (a) neutral (b) an acid (c) a base
  27. 27.🧺 Which of these is needed for the turmeric test? (a) a balloon (b) turmeric powder (c) a battery cell (d) a magnet
  28. 28.True or false: vinegar is a base. (a) False (b) True
  29. 29.True or false: yeast is needed for the turmeric test. (a) False (b) True
  30. 30.True or false: sugar water is a base. (a) False (b) True
  31. 31.🧺 Which of these is not needed for the turmeric test? (a) water (b) soap solution (c) a comb (d) turmeric powder
  32. 32.🧺 Which of these is needed for the turmeric test? (a) a magnet (b) a dropper or spoon (c) a mirror (d) a battery cell
  33. 33.True or false: plain water is neutral. (a) True (b) False
  34. 34.🟡 Which of these keeps turmeric yellow? (a) soap solution (b) detergent water (c) lemon juice (d) baking soda water
  35. 35.🧺 Do we need a balloon for the turmeric test? (a) not needed (b) needed
  36. 36.🔍 Which is the odd one out? (a) baking soda water (b) vinegar (c) plain water (d) tamarind water
  37. 37.🧺 Do we need a mirror for the turmeric test? (a) not needed (b) needed
  38. 38.True or false: lemon juice is needed for the turmeric test. (a) False (b) True
  39. 39.True or false: salt water keeps turmeric yellow. (a) True (b) False
  40. 40.🟡 Which of these turns turmeric reddish-brown? (a) tamarind water (b) salt water (c) plain water (d) baking soda water

Answer key

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

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