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Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 316 · 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) it turns green (d) reddish-brown
  2. 2.True or false: baking soda water keeps turmeric yellow. (a) False (b) True
  3. 3.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is what we measure. (a) False (b) True
  4. 4.🫧 Is salt water an acid, a base or neutral? (a) a base (b) neutral (c) an acid
  5. 5.True or false: soap solution is needed for the turmeric test. (a) True (b) False
  6. 6.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) white paper strips (b) a mirror (c) a dropper or spoon (d) soap solution
  7. 7.True or false: soap solution turns turmeric reddish-brown. (a) True (b) False
  8. 8.True or false: yeast is needed for the turmeric test. (a) True (b) False
  9. 9.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is kept the same. (a) False (b) True
  10. 10.🧺 Do we need a mirror for the turmeric test? (a) not needed (b) needed
  11. 11.🧺 Which of these is needed for the turmeric test? (a) yeast (b) a comb (c) a mirror (d) turmeric powder
  12. 12.True or false: a balloon is needed for the turmeric test. (a) False (b) True
  13. 13.🧺 Do we need lemon juice for the turmeric test? (a) needed (b) not needed
  14. 14.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is what we measure. (a) True (b) False
  15. 15.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is the one thing we change. (a) False (b) True
  16. 16.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the light we look in (b) the colour we see (c) the turmeric paper (d) the number of drops
  17. 17.🟡 Turmeric paper meets detergent water. What happens? (a) stays yellow (b) turns reddish-brown
  18. 18.True or false: a battery cell is needed for the turmeric test. (a) False (b) True
  19. 19.⚖️ 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
  20. 20.🔍 Which is the odd one out? (a) baking soda water (b) soap solution (c) salt water (d) detergent water
  21. 21.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns red (b) it turns black (c) it stays yellow (d) it turns blue
  22. 22.True or false: soap solution is not needed for the turmeric test. (a) True (b) False
  23. 23.🧺 Which of these is not needed for the turmeric test? (a) lemon juice (b) turmeric powder (c) a balloon (d) water
  24. 24.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a balloon (b) lemon juice (c) soap solution (d) white paper strips
  25. 25.🧺 Which of these is not needed for the turmeric test? (a) lemon juice (b) a magnet (c) water (d) a dropper or spoon
  26. 26.🔍 Which is the odd one out? (a) soap solution (b) detergent water (c) baking soda water (d) plain water
  27. 27.🧺 Do we need turmeric powder for the turmeric test? (a) not needed (b) needed
  28. 28.🛟 Turmeric stains clothes. What should you wear? (a) your school uniform (b) a white party dress (c) an old shirt or apron (d) your best clothes
  29. 29.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) white paper strips (b) soap solution (c) lemon juice (d) a battery cell
  30. 30.🛟 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
  31. 31.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) turmeric powder (c) yeast (d) soap solution
  32. 32.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the colour we see”? (a) we change it (b) we keep it the same (c) we measure it
  33. 33.True or false: lemon juice turns turmeric reddish-brown. (a) True (b) False
  34. 34.🫧 Which of these is an acid? (a) vinegar (b) baking soda water (c) salt water (d) detergent water
  35. 35.🟡 Turmeric paper meets sugar water. What happens? (a) stays yellow (b) turns reddish-brown
  36. 36.True or false: soap solution is a base. (a) False (b) True
  37. 37.🫧 Which of these is neutral? (a) lemon juice (b) salt water (c) tamarind water (d) curd
  38. 38.🫧 Is lemon juice an acid, a base or neutral? (a) a base (b) neutral (c) an acid
  39. 39.🧺 Which of these is needed for the turmeric test? (a) a mirror (b) lemon juice (c) yeast (d) a battery cell
  40. 40.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the turmeric paper (b) the colour we see (c) the liquid we test

Answer key

  1. reddish-brown
  2. False
  3. True
  4. neutral
  5. True
  6. a mirror
  7. True
  8. False
  9. True
  10. not needed
  11. turmeric powder
  12. False
  13. needed
  14. False
  15. False
  16. the colour we see
  17. turns reddish-brown
  18. False
  19. we change it
  20. salt water
  21. it stays yellow
  22. False
  23. a balloon
  24. a balloon
  25. a magnet
  26. plain water
  27. needed
  28. an old shirt or apron
  29. a battery cell
  30. use only kitchen items
  31. yeast
  32. we measure it
  33. False
  34. vinegar
  35. stays yellow
  36. True
  37. salt water
  38. an acid
  39. lemon juice
  40. the turmeric paper

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