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Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 499 · 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.🧺 Which of these is not needed for the turmeric test? (a) a magnet (b) water (c) a dropper or spoon (d) lemon juice
  2. 2.🔍 Which is the odd one out? (a) lemon juice (b) plain water (c) baking soda water (d) vinegar
  3. 3.🫧 Which of these is a base? (a) salt water (b) plain water (c) soap solution (d) tamarind water
  4. 4.True or false: a balloon is needed for the turmeric test. (a) True (b) False
  5. 5.True or false: a mirror is needed for the turmeric test. (a) True (b) False
  6. 6.True or false: white paper strips is needed for the turmeric test. (a) True (b) False
  7. 7.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) green (b) bright blue (c) reddish (d) white at once
  8. 8.⚖️ 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
  9. 9.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the colour we see”? (a) we measure it (b) we change it (c) we keep it the same
  10. 10.🧺 Which of these is needed for the turmeric test? (a) a magnet (b) a balloon (c) a comb (d) white paper strips
  11. 11.🫧 Is plain water an acid, a base or neutral? (a) neutral (b) a base (c) an acid
  12. 12.⚖️ 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 light we look in
  13. 13.🫧 Which of these is an acid? (a) plain water (b) baking soda water (c) detergent water (d) lemon juice
  14. 14.True or false: sugar water keeps turmeric yellow. (a) False (b) True
  15. 15.🔍 Which is the odd one out? (a) tamarind water (b) lemon juice (c) soap solution (d) salt water
  16. 16.🔍 Which is the odd one out? (a) detergent water (b) vinegar (c) salt water (d) plain water
  17. 17.True or false: a balloon is not needed for the turmeric test. (a) False (b) True
  18. 18.🍋 A reddish turmeric spot gets a few drops of lemon juice. What happens? (a) it disappears (b) it turns darker red (c) it turns blue (d) it turns yellow again
  19. 19.⚖️ 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
  20. 20.🫧 Is soap solution an acid, a base or neutral? (a) neutral (b) an acid (c) a base
  21. 21.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the liquid we test (b) the colour we see (c) the number of drops
  22. 22.True or false: a magnet is not needed for the turmeric test. (a) True (b) False
  23. 23.🟡 Which of these turns turmeric reddish-brown? (a) tamarind water (b) salt water (c) sugar water (d) detergent water
  24. 24.🔍 Which is the odd one out? (a) salt water (b) soap solution (c) baking soda water (d) detergent water
  25. 25.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the number of drops”? (a) we keep it the same (b) we change it (c) we measure it
  26. 26.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a dropper or spoon (b) soap solution (c) lemon juice (d) a magnet
  27. 27.True or false: a dropper or spoon is not needed for the turmeric test. (a) False (b) True
  28. 28.🫧 Is tamarind water an acid, a base or neutral? (a) an acid (b) a base (c) neutral
  29. 29.True or false: a comb is needed for the turmeric test. (a) True (b) False
  30. 30.🧺 Do we need soap solution for the turmeric test? (a) needed (b) not needed
  31. 31.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) water (c) yeast (d) white paper strips
  32. 32.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the colour we see (b) the number of drops (c) the liquid we test (d) the light we look in
  33. 33.🧺 Do we need a magnet for the turmeric test? (a) needed (b) not needed
  34. 34.🛟 Turmeric stains clothes. What should you wear? (a) your school uniform (b) your best clothes (c) an old shirt or apron (d) a white party dress
  35. 35.True or false: baking soda water keeps turmeric yellow. (a) True (b) False
  36. 36.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it stays yellow (b) it turns blue (c) reddish-brown (d) it turns green
  37. 37.🫧 Is lemon juice an acid, a base or neutral? (a) an acid (b) neutral (c) a base
  38. 38.🟡 Which of these turns turmeric reddish-brown? (a) baking soda water (b) lemon juice (c) salt water (d) plain water
  39. 39.True or false: turmeric powder is not needed for the turmeric test. (a) False (b) True
  40. 40.🧺 Do we need a battery cell for the turmeric test? (a) not needed (b) needed

Answer key

  1. a magnet
  2. baking soda water
  3. soap solution
  4. False
  5. False
  6. True
  7. reddish
  8. we change it
  9. we measure it
  10. white paper strips
  11. neutral
  12. the light we look in
  13. lemon juice
  14. True
  15. soap solution
  16. detergent water
  17. True
  18. it turns yellow again
  19. True
  20. a base
  21. the number of drops
  22. True
  23. detergent water
  24. salt water
  25. we keep it the same
  26. a magnet
  27. False
  28. an acid
  29. False
  30. needed
  31. yeast
  32. the colour we see
  33. not needed
  34. an old shirt or apron
  35. False
  36. reddish-brown
  37. an acid
  38. baking soda water
  39. False
  40. not needed

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