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Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 620 · 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.🟡 Which of these turns turmeric paper reddish-brown? (a) soap solution (b) vinegar (c) lemon juice (d) sugar water
  2. 2.🟡 Turmeric paper meets vinegar. What happens? (a) stays yellow (b) turns reddish-brown
  3. 3.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the number of drops”? (a) we keep it the same (b) we change it (c) we measure it
  4. 4.🟡 Which of these keeps turmeric yellow? (a) detergent water (b) tamarind water (c) baking soda water (d) soap solution
  5. 5.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) water (c) white paper strips (d) a battery cell
  6. 6.True or false: detergent water keeps turmeric yellow. (a) False (b) True
  7. 7.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the colour we see (b) the light we look in (c) the liquid we test (d) the turmeric paper
  8. 8.🫧 Is plain water an acid, a base or neutral? (a) a base (b) an acid (c) neutral
  9. 9.🛟 Turmeric stains clothes. What should you wear? (a) an old shirt or apron (b) a white party dress (c) your best clothes (d) your school uniform
  10. 10.True or false: vinegar turns turmeric reddish-brown. (a) False (b) True
  11. 11.🫧 Which of these is neutral? (a) detergent water (b) tamarind water (c) soap solution (d) sugar water
  12. 12.🫧 Is vinegar an acid, a base or neutral? (a) a base (b) neutral (c) an acid
  13. 13.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) white paper strips (c) a balloon (d) water
  14. 14.🫧 Which of these is a base? (a) soap solution (b) vinegar (c) curd (d) sugar water
  15. 15.⚖️ 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
  16. 16.🧺 Which of these is not needed for the turmeric test? (a) water (b) turmeric powder (c) a magnet (d) a dropper or spoon
  17. 17.🫧 Which of these is neutral? (a) baking soda water (b) detergent water (c) plain water (d) vinegar
  18. 18.🔍 Which is the odd one out? (a) soap solution (b) sugar water (c) baking soda water (d) detergent water
  19. 19.True or false: plain water is neutral. (a) True (b) False
  20. 20.🧺 Do we need a magnet for the turmeric test? (a) needed (b) not needed
  21. 21.True or false: white paper strips is needed for the turmeric test. (a) True (b) False
  22. 22.🔍 Which is the odd one out? (a) sugar water (b) plain water (c) vinegar (d) soap solution
  23. 23.⚖️ 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
  24. 24.🟡 Turmeric paper meets detergent water. What happens? (a) turns reddish-brown (b) stays yellow
  25. 25.🍋 A drop of lemon juice falls on turmeric paper. What happens? (a) it stays yellow (b) it turns blue (c) it turns red (d) it turns black
  26. 26.🟡 Turmeric paper meets sugar water. What happens? (a) turns reddish-brown (b) stays yellow
  27. 27.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is kept the same. (a) True (b) False
  28. 28.True or false: sugar water is an acid. (a) True (b) False
  29. 29.🟡 Which of these turns turmeric reddish-brown? (a) baking soda water (b) plain water (c) sugar water (d) tamarind water
  30. 30.🫧 Is baking soda water an acid, a base or neutral? (a) a base (b) an acid (c) neutral
  31. 31.🫧 Is detergent water an acid, a base or neutral? (a) a base (b) neutral (c) an acid
  32. 32.True or false: lemon juice is not needed for the turmeric test. (a) True (b) False
  33. 33.🫧 Which of these is an acid? (a) baking soda water (b) lemon juice (c) soap solution (d) plain water
  34. 34.🍋 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
  35. 35.🟡 Turmeric paper meets baking soda water. What happens? (a) stays yellow (b) turns reddish-brown
  36. 36.🛟 Which rule keeps the turmeric test safe? (a) sniff each bottle hard (b) mix bathroom cleaners (c) use only kitchen items (d) sip each liquid
  37. 37.🔍 Which is the odd one out? (a) sugar water (b) salt water (c) detergent water (d) lemon juice
  38. 38.🔍 Which is the odd one out? (a) plain water (b) baking soda water (c) detergent water (d) soap solution
  39. 39.🫧 Which of these is neutral? (a) orange juice (b) salt water (c) tamarind water (d) lemon juice
  40. 40.🧺 Do we need white paper strips for the turmeric test? (a) needed (b) not needed

Answer key

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

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