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Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 377 · 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.🛟 Turmeric stains clothes. What should you wear? (a) a white party dress (b) your school uniform (c) an old shirt or apron (d) your best clothes
  2. 2.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the light we look in (b) the liquid we test (c) the number of drops (d) the colour we see
  3. 3.🧺 Do we need a balloon for the turmeric test? (a) not needed (b) needed
  4. 4.True or false: tamarind water keeps turmeric yellow. (a) False (b) True
  5. 5.🔍 Which is the odd one out? (a) salt water (b) vinegar (c) sugar water (d) soap solution
  6. 6.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is kept the same. (a) False (b) True
  7. 7.True or false: soap solution keeps turmeric yellow. (a) True (b) False
  8. 8.🍋 A drop of lemon juice falls on turmeric paper. What happens? (a) it stays yellow (b) it turns black (c) it turns blue (d) it turns red
  9. 9.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the liquid we test”? (a) we measure it (b) we change it (c) we keep it the same
  10. 10.🟡 Which of these keeps turmeric yellow? (a) baking soda water (b) sugar water (c) detergent water (d) soap solution
  11. 11.🔍 Which is the odd one out? (a) detergent water (b) baking soda water (c) soap solution (d) tamarind water
  12. 12.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is what we measure. (a) True (b) False
  13. 13.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) reddish-brown (b) it turns blue (c) it stays yellow (d) it turns green
  14. 14.🟡 Which of these turns turmeric reddish-brown? (a) vinegar (b) soap solution (c) tamarind water (d) lemon juice
  15. 15.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the light we look in is what we measure. (a) True (b) False
  16. 16.🫧 Is salt water an acid, a base or neutral? (a) an acid (b) a base (c) neutral
  17. 17.🧺 Which of these is not needed for the turmeric test? (a) a magnet (b) soap solution (c) water (d) lemon juice
  18. 18.🟡 Which of these keeps turmeric yellow? (a) vinegar (b) detergent water (c) baking soda water (d) soap solution
  19. 19.🔍 Which is the odd one out? (a) soap solution (b) detergent water (c) salt water (d) baking soda water
  20. 20.True or false: curd is neutral. (a) True (b) False
  21. 21.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns red (b) it stays yellow (c) it turns black (d) it turns blue
  22. 22.⚖️ 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
  23. 23.True or false: salt water is neutral. (a) False (b) True
  24. 24.True or false: curd is an acid. (a) False (b) True
  25. 25.🧺 Which of these is not needed for the turmeric test? (a) a dropper or spoon (b) a mirror (c) lemon juice (d) soap solution
  26. 26.🫧 Is soap solution an acid, a base or neutral? (a) a base (b) an acid (c) neutral
  27. 27.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is the one thing we change. (a) True (b) False
  28. 28.🧺 Do we need soap solution for the turmeric test? (a) not needed (b) needed
  29. 29.🔍 Which is the odd one out? (a) baking soda water (b) sugar water (c) soap solution (d) detergent water
  30. 30.True or false: baking soda water turns turmeric reddish-brown. (a) True (b) False
  31. 31.True or false: sugar water keeps turmeric yellow. (a) False (b) True
  32. 32.🟡 Turmeric paper meets salt water. What happens? (a) stays yellow (b) turns reddish-brown
  33. 33.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) white paper strips (b) water (c) soap solution (d) a magnet
  34. 34.🫧 Which of these is a base? (a) soap solution (b) lemon juice (c) plain water (d) sugar water
  35. 35.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the colour we see (b) the liquid we test (c) the turmeric paper
  36. 36.True or false: a comb is not needed for the turmeric test. (a) False (b) True
  37. 37.True or false: a balloon is needed for the turmeric test. (a) True (b) False
  38. 38.True or false: lemon juice keeps turmeric yellow. (a) True (b) False
  39. 39.⚖️ 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 change it (c) we measure it
  40. 40.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the number of drops”? (a) we measure it (b) we keep it the same (c) we change it

Answer key

  1. an old shirt or apron
  2. the colour we see
  3. not needed
  4. True
  5. soap solution
  6. False
  7. False
  8. it stays yellow
  9. we change it
  10. sugar water
  11. tamarind water
  12. False
  13. reddish-brown
  14. soap solution
  15. False
  16. neutral
  17. a magnet
  18. vinegar
  19. salt water
  20. False
  21. it stays yellow
  22. True
  23. True
  24. True
  25. a mirror
  26. a base
  27. True
  28. needed
  29. sugar water
  30. True
  31. True
  32. stays yellow
  33. a magnet
  34. soap solution
  35. the turmeric paper
  36. True
  37. False
  38. True
  39. we measure it
  40. we keep it the same

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