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Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 563 · 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.🫧 Is curd an acid, a base or neutral? (a) an acid (b) neutral (c) a base
  2. 2.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) white paper strips (b) turmeric powder (c) a balloon (d) water
  3. 3.True or false: soap solution is not needed for the turmeric test. (a) False (b) True
  4. 4.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) white paper strips (c) a battery cell (d) turmeric powder
  5. 5.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) turmeric powder (c) white paper strips (d) a magnet
  6. 6.True or false: baking soda water keeps turmeric yellow. (a) False (b) True
  7. 7.🟡 Why does soap solution change turmeric’s colour? (a) soap is hot (b) soap is magnetic (c) soap is an acid (d) soap water is a base
  8. 8.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the colour we see (b) the liquid we test (c) the number of drops (d) the light we look in
  9. 9.🫧 Is detergent water an acid, a base or neutral? (a) an acid (b) neutral (c) a base
  10. 10.🫧 Which of these is a base? (a) salt water (b) vinegar (c) detergent water (d) curd
  11. 11.🛟 Turmeric stains clothes. What should you wear? (a) your best clothes (b) an old shirt or apron (c) your school uniform (d) a white party dress
  12. 12.🔍 Which is the odd one out? (a) soap solution (b) plain water (c) detergent water (d) baking soda water
  13. 13.🫧 Is baking soda water an acid, a base or neutral? (a) a base (b) an acid (c) neutral
  14. 14.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) a dropper or spoon (c) a comb (d) water
  15. 15.🧺 Do we need water for the turmeric test? (a) needed (b) not needed
  16. 16.True or false: curd is neutral. (a) True (b) False
  17. 17.🫧 Is sugar water an acid, a base or neutral? (a) neutral (b) an acid (c) a base
  18. 18.🫧 Which of these is an acid? (a) plain water (b) vinegar (c) detergent water (d) baking soda water
  19. 19.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns blue (b) it stays yellow (c) it turns black (d) it turns red
  20. 20.🔍 Which is the odd one out? (a) tamarind water (b) salt water (c) soap solution (d) vinegar
  21. 21.🫧 Is salt water an acid, a base or neutral? (a) an acid (b) neutral (c) a base
  22. 22.⚖️ 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
  23. 23.🛟 Which rule keeps the turmeric test safe? (a) sniff each bottle hard (b) use only kitchen items (c) mix bathroom cleaners (d) sip each liquid
  24. 24.🧺 Do we need a balloon for the turmeric test? (a) needed (b) not needed
  25. 25.True or false: lemon juice is not needed for the turmeric test. (a) False (b) True
  26. 26.🧺 Do we need soap solution for the turmeric test? (a) needed (b) not needed
  27. 27.🍋 A drop of lemon juice falls on turmeric paper. What happens? (a) it turns blue (b) it turns red (c) it turns black (d) it stays yellow
  28. 28.True or false: water is needed for the turmeric test. (a) False (b) True
  29. 29.🧺 Which of these is not needed for the turmeric test? (a) lemon juice (b) yeast (c) a dropper or spoon (d) soap solution
  30. 30.🟡 Turmeric paper meets salt water. What happens? (a) turns reddish-brown (b) stays yellow
  31. 31.True or false: vinegar is a base. (a) True (b) False
  32. 32.🟡 Turmeric paper meets baking soda water. What happens? (a) turns reddish-brown (b) stays yellow
  33. 33.🔍 Which is the odd one out? (a) baking soda water (b) detergent water (c) soap solution (d) sugar water
  34. 34.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the turmeric paper”? (a) we keep it the same (b) we measure it (c) we change it
  35. 35.True or false: a magnet is needed for the turmeric test. (a) False (b) True
  36. 36.🫧 Is tamarind water an acid, a base or neutral? (a) an acid (b) a base (c) neutral
  37. 37.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is kept the same. (a) True (b) False
  38. 38.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the turmeric paper (b) the colour we see (c) the number of drops (d) the liquid we test
  39. 39.🧺 Which of these is needed for the turmeric test? (a) yeast (b) a balloon (c) a dropper or spoon (d) a battery cell
  40. 40.⚖️ 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

Answer key

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

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