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Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 580 · 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.True or false: vinegar turns turmeric reddish-brown. (a) True (b) False
  2. 2.True or false: salt water turns turmeric reddish-brown. (a) True (b) False
  3. 3.🧺 Do we need a balloon for the turmeric test? (a) not needed (b) needed
  4. 4.🧺 Which of these is not needed for the turmeric test? (a) a dropper or spoon (b) turmeric powder (c) a magnet (d) white paper strips
  5. 5.🟡 Turmeric paper meets vinegar. What happens? (a) stays yellow (b) turns reddish-brown
  6. 6.🧺 Do we need a magnet for the turmeric test? (a) needed (b) not needed
  7. 7.⚖️ 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
  8. 8.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) lemon juice (c) a dropper or spoon (d) a comb
  9. 9.🧺 Which of these is needed for the turmeric test? (a) a mirror (b) yeast (c) white paper strips (d) a comb
  10. 10.🟡 Which of these turns turmeric reddish-brown? (a) sugar water (b) baking soda water (c) plain water (d) vinegar
  11. 11.True or false: yeast is not needed for the turmeric test. (a) True (b) False
  12. 12.🛟 Which rule keeps the turmeric test safe? (a) use only kitchen items (b) mix bathroom cleaners (c) sip each liquid (d) sniff each bottle hard
  13. 13.🟡 Which of these turns turmeric reddish-brown? (a) plain water (b) lemon juice (c) detergent water (d) tamarind water
  14. 14.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it stays yellow (b) it turns black (c) it turns red (d) it turns blue
  15. 15.True or false: tamarind water keeps turmeric yellow. (a) False (b) True
  16. 16.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is kept the same. (a) True (b) False
  17. 17.🟡 Turmeric paper meets soap solution. What happens? (a) stays yellow (b) turns reddish-brown
  18. 18.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it turns green (b) it stays yellow (c) it turns blue (d) reddish-brown
  19. 19.🟡 Which of these keeps turmeric yellow? (a) baking soda water (b) detergent water (c) soap solution (d) vinegar
  20. 20.🧺 Which of these is needed for the turmeric test? (a) a battery cell (b) a comb (c) turmeric powder (d) a balloon
  21. 21.True or false: white paper strips is needed for the turmeric test. (a) True (b) False
  22. 22.🫧 Which of these is an acid? (a) baking soda water (b) sugar water (c) orange juice (d) detergent water
  23. 23.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the colour we see”? (a) we measure it (b) we keep it the same (c) we change it
  24. 24.True or false: sugar water keeps turmeric yellow. (a) True (b) False
  25. 25.⚖️ 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 change it (c) we measure it
  26. 26.🧺 Do we need a dropper or spoon for the turmeric test? (a) not needed (b) needed
  27. 27.True or false: a comb is not needed for the turmeric test. (a) False (b) True
  28. 28.🧺 Which of these is needed for the turmeric test? (a) soap solution (b) a magnet (c) a balloon (d) a battery cell
  29. 29.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is the one thing we change. (a) True (b) False
  30. 30.True or false: lemon juice is neutral. (a) False (b) True
  31. 31.🛟 Turmeric stains clothes. What should you wear? (a) an old shirt or apron (b) your best clothes (c) a white party dress (d) your school uniform
  32. 32.🧺 Do we need white paper strips for the turmeric test? (a) needed (b) not needed
  33. 33.True or false: a magnet is needed for the turmeric test. (a) False (b) True
  34. 34.True or false: yeast is needed for the turmeric test. (a) False (b) True
  35. 35.True or false: soap solution turns turmeric reddish-brown. (a) False (b) True
  36. 36.🫧 Which of these is an acid? (a) baking soda water (b) vinegar (c) salt water (d) soap solution
  37. 37.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is kept the same. (a) True (b) False
  38. 38.🍋 A reddish turmeric spot gets a few drops of lemon juice. What happens? (a) it turns blue (b) it turns darker red (c) it disappears (d) it turns yellow again
  39. 39.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) bright blue (b) it stays white (c) reddish-brown (d) green
  40. 40.🫧 Which of these is neutral? (a) vinegar (b) lemon juice (c) plain water (d) orange juice

Answer key

  1. False
  2. False
  3. not needed
  4. a magnet
  5. stays yellow
  6. not needed
  7. we keep it the same
  8. a comb
  9. white paper strips
  10. baking soda water
  11. True
  12. use only kitchen items
  13. detergent water
  14. it stays yellow
  15. True
  16. False
  17. turns reddish-brown
  18. reddish-brown
  19. vinegar
  20. turmeric powder
  21. True
  22. orange juice
  23. we measure it
  24. True
  25. we keep it the same
  26. needed
  27. True
  28. soap solution
  29. False
  30. False
  31. an old shirt or apron
  32. needed
  33. False
  34. False
  35. True
  36. vinegar
  37. False
  38. it turns yellow again
  39. reddish-brown
  40. plain water

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