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Turmeric Indicator Experiment Worksheet

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

Answer key

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

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