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Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 117 · 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: baking soda water is neutral. (a) True (b) False
  2. 2.🔍 Which is the odd one out? (a) tamarind water (b) detergent water (c) salt water (d) vinegar
  3. 3.🧺 Which of these is not needed for the turmeric test? (a) water (b) a dropper or spoon (c) lemon juice (d) a balloon
  4. 4.🧺 Do we need turmeric powder for the turmeric test? (a) needed (b) not needed
  5. 5.True or false: baking soda water turns turmeric reddish-brown. (a) False (b) True
  6. 6.🧺 Which of these is not needed for the turmeric test? (a) soap solution (b) turmeric powder (c) a battery cell (d) lemon juice
  7. 7.🟡 Which of these turns turmeric reddish-brown? (a) tamarind water (b) vinegar (c) plain water (d) baking soda water
  8. 8.True or false: a magnet is needed for the turmeric test. (a) True (b) False
  9. 9.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) white paper strips (b) a battery cell (c) water (d) soap solution
  10. 10.True or false: orange juice is an acid. (a) False (b) True
  11. 11.⚖️ 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 colour we see (d) the turmeric paper
  12. 12.🟡 Which of these turns turmeric reddish-brown? (a) plain water (b) soap solution (c) lemon juice (d) salt water
  13. 13.🛟 Turmeric stains clothes. What should you wear? (a) your school uniform (b) your best clothes (c) a white party dress (d) an old shirt or apron
  14. 14.🧺 Do we need a dropper or spoon for the turmeric test? (a) needed (b) not needed
  15. 15.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the number of drops (b) the turmeric paper (c) the light we look in (d) the liquid we test
  16. 16.🫧 Which of these is an acid? (a) plain water (b) orange juice (c) detergent water (d) salt water
  17. 17.True or false: a battery cell is not needed for the turmeric test. (a) False (b) True
  18. 18.🫧 Is curd an acid, a base or neutral? (a) a base (b) neutral (c) an acid
  19. 19.🧺 Which of these is needed for the turmeric test? (a) a battery cell (b) white paper strips (c) yeast (d) a magnet
  20. 20.🔍 Which is the odd one out? (a) sugar water (b) tamarind water (c) plain water (d) soap solution
  21. 21.🧺 Which of these is needed for the turmeric test? (a) yeast (b) a mirror (c) a magnet (d) a dropper or spoon
  22. 22.🫧 Is soap solution an acid, a base or neutral? (a) a base (b) an acid (c) neutral
  23. 23.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the light we look in”? (a) we measure it (b) we change it (c) we keep it the same
  24. 24.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is kept the same. (a) False (b) True
  25. 25.🧺 Do we need soap solution for the turmeric test? (a) needed (b) not needed
  26. 26.🫧 Which of these is neutral? (a) vinegar (b) tamarind water (c) plain water (d) lemon juice
  27. 27.🛟 Which rule keeps the turmeric test safe? (a) mix bathroom cleaners (b) sniff each bottle hard (c) sip each liquid (d) use only kitchen items
  28. 28.🫧 Is baking soda water an acid, a base or neutral? (a) an acid (b) neutral (c) a base
  29. 29.🫧 Which of these is neutral? (a) curd (b) detergent water (c) salt water (d) baking soda water
  30. 30.⚖️ 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
  31. 31.🧺 Which of these is not needed for the turmeric test? (a) water (b) white paper strips (c) turmeric powder (d) a magnet
  32. 32.True or false: detergent water turns turmeric reddish-brown. (a) False (b) True
  33. 33.True or false: a mirror is needed for the turmeric test. (a) True (b) False
  34. 34.🫧 Which of these is a base? (a) baking soda water (b) sugar water (c) salt water (d) plain water
  35. 35.🫧 Which of these is an acid? (a) salt water (b) sugar water (c) baking soda water (d) curd
  36. 36.🟡 Which of these keeps turmeric yellow? (a) detergent water (b) salt water (c) soap solution (d) baking soda water
  37. 37.🫧 Is orange juice an acid, a base or neutral? (a) a base (b) an acid (c) neutral
  38. 38.True or false: lemon juice is a base. (a) True (b) False
  39. 39.True or false: water is needed for the turmeric test. (a) False (b) True
  40. 40.True or false: lemon juice is needed for the turmeric test. (a) True (b) False

Answer key

  1. False
  2. detergent water
  3. a balloon
  4. needed
  5. True
  6. a battery cell
  7. baking soda water
  8. False
  9. a battery cell
  10. True
  11. the colour we see
  12. soap solution
  13. an old shirt or apron
  14. needed
  15. the liquid we test
  16. orange juice
  17. True
  18. an acid
  19. white paper strips
  20. soap solution
  21. a dropper or spoon
  22. a base
  23. we keep it the same
  24. True
  25. needed
  26. plain water
  27. use only kitchen items
  28. a base
  29. salt water
  30. we measure it
  31. a magnet
  32. True
  33. False
  34. baking soda water
  35. curd
  36. salt water
  37. an acid
  38. False
  39. True
  40. True

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