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Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 665 · 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.

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

Answer key

  1. an old shirt or apron
  2. a balloon
  3. detergent water
  4. we keep it the same
  5. plain water
  6. white paper strips
  7. stays yellow
  8. an acid
  9. use only kitchen items
  10. vinegar
  11. False
  12. a comb
  13. False
  14. we change it
  15. the colour we see
  16. an acid
  17. True
  18. vinegar
  19. False
  20. True
  21. plain water
  22. stays yellow
  23. neutral
  24. needed
  25. lemon juice
  26. False
  27. a dropper or spoon
  28. needed
  29. we keep it the same
  30. a mirror
  31. True
  32. it turns yellow again
  33. salt water
  34. an acid
  35. soap solution
  36. False
  37. True
  38. True
  39. False
  40. the number of drops

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