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Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 168 · 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: a dropper or spoon is not needed for the turmeric test. (a) True (b) False
  2. 2.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) white paper strips (c) a comb (d) lemon juice
  3. 3.🟡 Which of these keeps turmeric yellow? (a) baking soda water (b) soap solution (c) detergent water (d) plain water
  4. 4.🟡 Which of these turns turmeric reddish-brown? (a) plain water (b) lemon juice (c) baking soda water (d) salt water
  5. 5.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the light we look in (b) the colour we see (c) the number of drops (d) the liquid we test
  6. 6.🫧 Is tamarind water an acid, a base or neutral? (a) a base (b) neutral (c) an acid
  7. 7.True or false: a balloon is not needed for the turmeric test. (a) True (b) False
  8. 8.🫧 Is baking soda water an acid, a base or neutral? (a) neutral (b) an acid (c) a base
  9. 9.🟡 Which of these turns turmeric paper reddish-brown? (a) sugar water (b) lemon juice (c) soap solution (d) vinegar
  10. 10.🟡 Turmeric paper meets sugar water. What happens? (a) turns reddish-brown (b) stays yellow
  11. 11.🛟 Turmeric stains clothes. What should you wear? (a) your school uniform (b) a white party dress (c) an old shirt or apron (d) your best clothes
  12. 12.True or false: a balloon is needed for the turmeric test. (a) False (b) True
  13. 13.🟡 Which of these turns turmeric reddish-brown? (a) vinegar (b) soap solution (c) tamarind water (d) lemon juice
  14. 14.True or false: plain water is a base. (a) False (b) True
  15. 15.True or false: salt water turns turmeric reddish-brown. (a) True (b) False
  16. 16.🔍 Which is the odd one out? (a) vinegar (b) lemon juice (c) plain water (d) baking soda water
  17. 17.True or false: lemon juice is needed for the turmeric test. (a) True (b) False
  18. 18.🟡 Turmeric paper meets lemon juice. What happens? (a) stays yellow (b) turns reddish-brown
  19. 19.🧺 Which of these is needed for the turmeric test? (a) a comb (b) a magnet (c) a battery cell (d) a dropper or spoon
  20. 20.🍋 A reddish turmeric spot gets a few drops of lemon juice. What happens? (a) it turns blue (b) it disappears (c) it turns yellow again (d) it turns darker red
  21. 21.🫧 Which of these is an acid? (a) baking soda water (b) curd (c) soap solution (d) salt water
  22. 22.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the light we look in”? (a) we keep it the same (b) we measure it (c) we change it
  23. 23.True or false: a magnet is needed for the turmeric test. (a) False (b) True
  24. 24.🧺 Which of these is not needed for the turmeric test? (a) turmeric powder (b) white paper strips (c) water (d) a magnet
  25. 25.🫧 Is curd an acid, a base or neutral? (a) an acid (b) a base (c) neutral
  26. 26.True or false: detergent water turns turmeric reddish-brown. (a) True (b) False
  27. 27.True or false: sugar water keeps turmeric yellow. (a) False (b) True
  28. 28.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) bright blue (b) reddish-brown (c) green (d) it stays white
  29. 29.🫧 Is lemon juice an acid, a base or neutral? (a) a base (b) neutral (c) an acid
  30. 30.🧺 Do we need water for the turmeric test? (a) not needed (b) needed
  31. 31.🧺 Which of these is needed for the turmeric test? (a) yeast (b) a magnet (c) lemon juice (d) a comb
  32. 32.🫧 Is sugar water an acid, a base or neutral? (a) an acid (b) neutral (c) a base
  33. 33.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the light we look in is what we measure. (a) False (b) True
  34. 34.⚖️ 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
  35. 35.🧺 Which of these is needed for the turmeric test? (a) yeast (b) a battery cell (c) soap solution (d) a magnet
  36. 36.🟡 Turmeric paper meets vinegar. What happens? (a) stays yellow (b) turns reddish-brown
  37. 37.🔍 Which is the odd one out? (a) plain water (b) tamarind water (c) vinegar (d) soap solution
  38. 38.True or false: baking soda water is neutral. (a) True (b) False
  39. 39.🟡 Which of these keeps turmeric yellow? (a) salt water (b) baking soda water (c) detergent water (d) soap solution
  40. 40.True or false: detergent water keeps turmeric yellow. (a) False (b) True

Answer key

  1. False
  2. a comb
  3. plain water
  4. baking soda water
  5. the colour we see
  6. an acid
  7. True
  8. a base
  9. soap solution
  10. stays yellow
  11. an old shirt or apron
  12. False
  13. soap solution
  14. False
  15. False
  16. baking soda water
  17. True
  18. stays yellow
  19. a dropper or spoon
  20. it turns yellow again
  21. curd
  22. we keep it the same
  23. False
  24. a magnet
  25. an acid
  26. True
  27. True
  28. reddish-brown
  29. an acid
  30. needed
  31. lemon juice
  32. neutral
  33. False
  34. we measure it
  35. soap solution
  36. stays yellow
  37. soap solution
  38. False
  39. salt water
  40. False

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