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Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 761 · 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: sugar water turns turmeric reddish-brown. (a) False (b) True
  2. 2.🟡 Which of these turns turmeric paper reddish-brown? (a) sugar water (b) soap solution (c) lemon juice (d) vinegar
  3. 3.🛟 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
  4. 4.🔍 Which is the odd one out? (a) soap solution (b) salt water (c) baking soda water (d) detergent water
  5. 5.🫧 Is orange juice an acid, a base or neutral? (a) an acid (b) neutral (c) a base
  6. 6.True or false: tamarind water turns turmeric reddish-brown. (a) True (b) False
  7. 7.🫧 Is lemon juice an acid, a base or neutral? (a) neutral (b) an acid (c) a base
  8. 8.True or false: vinegar is a base. (a) False (b) True
  9. 9.🛟 Which rule keeps the turmeric test safe? (a) sniff each bottle hard (b) sip each liquid (c) mix bathroom cleaners (d) use only kitchen items
  10. 10.True or false: a dropper or spoon is needed for the turmeric test. (a) True (b) False
  11. 11.🫧 Is vinegar an acid, a base or neutral? (a) a base (b) an acid (c) neutral
  12. 12.🫧 Which of these is a base? (a) lemon juice (b) curd (c) soap solution (d) tamarind water
  13. 13.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a magnet (b) a dropper or spoon (c) white paper strips (d) soap solution
  14. 14.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is what we measure. (a) True (b) False
  15. 15.🫧 Which of these is an acid? (a) baking soda water (b) plain water (c) curd (d) soap solution
  16. 16.🧺 Which of these is needed for the turmeric test? (a) a battery cell (b) a magnet (c) a mirror (d) lemon juice
  17. 17.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is kept the same. (a) False (b) True
  18. 18.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the light we look in is kept the same. (a) False (b) True
  19. 19.🧺 Do we need a mirror for the turmeric test? (a) needed (b) not needed
  20. 20.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the liquid we test (b) the number of drops (c) the turmeric paper (d) the light we look in
  21. 21.🧺 Do we need lemon juice for the turmeric test? (a) not needed (b) needed
  22. 22.🔍 Which is the odd one out? (a) soap solution (b) plain water (c) baking soda water (d) detergent water
  23. 23.True or false: tamarind water keeps turmeric yellow. (a) True (b) False
  24. 24.🔍 Which is the odd one out? (a) baking soda water (b) vinegar (c) soap solution (d) detergent water
  25. 25.⚖️ 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
  26. 26.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) white paper strips (c) soap solution (d) a battery cell
  27. 27.True or false: orange juice is neutral. (a) True (b) False
  28. 28.🧺 Do we need a battery cell for the turmeric test? (a) needed (b) not needed
  29. 29.🧺 Do we need a comb for the turmeric test? (a) needed (b) not needed
  30. 30.🧺 Which of these is not needed for the turmeric test? (a) a mirror (b) lemon juice (c) a dropper or spoon (d) turmeric powder
  31. 31.🫧 Which of these is an acid? (a) tamarind water (b) sugar water (c) detergent water (d) baking soda water
  32. 32.🟡 Why does soap solution change turmeric’s colour? (a) soap is an acid (b) soap is hot (c) soap is magnetic (d) soap water is a base
  33. 33.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it turns green (b) reddish-brown (c) it stays yellow (d) it turns blue
  34. 34.🧺 Do we need water for the turmeric test? (a) not needed (b) needed
  35. 35.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the turmeric paper”? (a) we measure it (b) we change it (c) we keep it the same
  36. 36.🟡 Which of these keeps turmeric yellow? (a) detergent water (b) soap solution (c) lemon juice (d) baking soda water
  37. 37.🧺 Which of these is not needed for the turmeric test? (a) lemon juice (b) soap solution (c) a magnet (d) white paper strips
  38. 38.🫧 Which of these is a base? (a) vinegar (b) detergent water (c) sugar water (d) salt water
  39. 39.🔍 Which is the odd one out? (a) sugar water (b) soap solution (c) salt water (d) tamarind water
  40. 40.🫧 Is soap solution an acid, a base or neutral? (a) neutral (b) an acid (c) a base

Answer key

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

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