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Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 513 · 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.🍋 A drop of lemon juice falls on turmeric paper. What happens? (a) it turns black (b) it turns red (c) it turns blue (d) it stays yellow
  2. 2.🟡 Which of these turns turmeric reddish-brown? (a) baking soda water (b) salt water (c) lemon juice (d) sugar water
  3. 3.True or false: curd is an acid. (a) False (b) True
  4. 4.🧺 Do we need white paper strips for the turmeric test? (a) not needed (b) needed
  5. 5.True or false: a comb is not needed for the turmeric test. (a) False (b) True
  6. 6.🟡 Turmeric paper meets tamarind water. What happens? (a) turns reddish-brown (b) stays yellow
  7. 7.⚖️ 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 colour we see (d) the liquid we test
  8. 8.🛟 Which rule keeps the turmeric test safe? (a) use only kitchen items (b) sniff each bottle hard (c) mix bathroom cleaners (d) sip each liquid
  9. 9.🧺 Which of these is needed for the turmeric test? (a) a comb (b) a balloon (c) white paper strips (d) a mirror
  10. 10.⚖️ 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
  11. 11.🟡 Turmeric paper meets baking soda water. What happens? (a) stays yellow (b) turns reddish-brown
  12. 12.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) a dropper or spoon (c) soap solution (d) a mirror
  13. 13.True or false: soap solution is neutral. (a) True (b) False
  14. 14.🟡 Turmeric paper meets soap solution. What happens? (a) turns reddish-brown (b) stays yellow
  15. 15.🛟 Turmeric stains clothes. What should you wear? (a) your best clothes (b) your school uniform (c) an old shirt or apron (d) a white party dress
  16. 16.True or false: plain water is neutral. (a) False (b) True
  17. 17.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the light we look in is the one thing we change. (a) True (b) False
  18. 18.🫧 Is curd an acid, a base or neutral? (a) an acid (b) neutral (c) a base
  19. 19.🧺 Do we need lemon juice for the turmeric test? (a) needed (b) not needed
  20. 20.🫧 Is salt water an acid, a base or neutral? (a) neutral (b) a base (c) an acid
  21. 21.🧺 Do we need a magnet for the turmeric test? (a) needed (b) not needed
  22. 22.🟡 Turmeric paper meets salt water. What happens? (a) turns reddish-brown (b) stays yellow
  23. 23.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the light we look in (b) the colour we see (c) the liquid we test
  24. 24.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the light we look in is kept the same. (a) True (b) False
  25. 25.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the light we look in”? (a) we change it (b) we measure it (c) we keep it the same
  26. 26.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) turmeric powder (c) a dropper or spoon (d) a magnet
  27. 27.🔍 Which is the odd one out? (a) soap solution (b) baking soda water (c) detergent water (d) tamarind water
  28. 28.🔍 Which is the odd one out? (a) salt water (b) tamarind water (c) soap solution (d) sugar water
  29. 29.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) lemon juice (c) a dropper or spoon (d) a battery cell
  30. 30.🫧 Which of these is an acid? (a) vinegar (b) baking soda water (c) sugar water (d) soap solution
  31. 31.🟡 Which of these keeps turmeric yellow? (a) detergent water (b) baking soda water (c) soap solution (d) salt water
  32. 32.True or false: soap solution is a base. (a) True (b) False
  33. 33.True or false: baking soda water is an acid. (a) True (b) False
  34. 34.True or false: tamarind water is a base. (a) False (b) True
  35. 35.🫧 Is sugar water an acid, a base or neutral? (a) neutral (b) a base (c) an acid
  36. 36.🫧 Which of these is a base? (a) orange juice (b) plain water (c) baking soda water (d) curd
  37. 37.🫧 Which of these is an acid? (a) plain water (b) sugar water (c) orange juice (d) salt water
  38. 38.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is what we measure. (a) False (b) True
  39. 39.🫧 Which of these is a base? (a) tamarind water (b) sugar water (c) soap solution (d) plain water
  40. 40.🍋 A reddish turmeric spot gets a few drops of lemon juice. What happens? (a) it turns darker red (b) it turns yellow again (c) it turns blue (d) it disappears

Answer key

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

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