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Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 602 · 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.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the liquid we test”? (a) we keep it the same (b) we change it (c) we measure it
  2. 2.🧺 Do we need a mirror for the turmeric test? (a) needed (b) not needed
  3. 3.⚖️ 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
  4. 4.🟡 Turmeric paper meets vinegar. What happens? (a) turns reddish-brown (b) stays yellow
  5. 5.True or false: water is not needed for the turmeric test. (a) False (b) True
  6. 6.🟡 Which of these keeps turmeric yellow? (a) baking soda water (b) soap solution (c) tamarind water (d) detergent water
  7. 7.🫧 Which of these is a base? (a) lemon juice (b) orange juice (c) sugar water (d) detergent water
  8. 8.🛟 Which rule keeps the turmeric test safe? (a) sip each liquid (b) mix bathroom cleaners (c) use only kitchen items (d) sniff each bottle hard
  9. 9.🧺 Do we need a dropper or spoon for the turmeric test? (a) needed (b) not needed
  10. 10.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the light we look in (b) the turmeric paper (c) the colour we see (d) the liquid we test
  11. 11.🔍 Which is the odd one out? (a) vinegar (b) salt water (c) plain water (d) detergent water
  12. 12.🔍 Which is the odd one out? (a) vinegar (b) detergent water (c) baking soda water (d) soap solution
  13. 13.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is the one thing we change. (a) False (b) True
  14. 14.🧺 Do we need white paper strips for the turmeric test? (a) not needed (b) needed
  15. 15.🟡 Turmeric paper meets detergent water. What happens? (a) stays yellow (b) turns reddish-brown
  16. 16.⚖️ 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 measure it (c) we change it
  17. 17.🧺 Which of these is not needed for the turmeric test? (a) yeast (b) a dropper or spoon (c) turmeric powder (d) water
  18. 18.True or false: salt water turns turmeric reddish-brown. (a) True (b) False
  19. 19.🧺 Do we need water for the turmeric test? (a) not needed (b) needed
  20. 20.True or false: baking soda water turns turmeric reddish-brown. (a) False (b) True
  21. 21.🫧 Which of these is neutral? (a) tamarind water (b) lemon juice (c) plain water (d) baking soda water
  22. 22.🔮 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
  23. 23.True or false: lemon juice is a base. (a) False (b) True
  24. 24.🧺 Which of these is needed for the turmeric test? (a) a battery cell (b) a comb (c) a mirror (d) soap solution
  25. 25.🧺 Do we need a magnet for the turmeric test? (a) needed (b) not needed
  26. 26.🧺 Do we need a balloon for the turmeric test? (a) needed (b) not needed
  27. 27.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the number of drops (b) the liquid we test (c) the colour we see (d) the light we look in
  28. 28.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is what we measure. (a) False (b) True
  29. 29.🫧 Is baking soda water an acid, a base or neutral? (a) an acid (b) a base (c) neutral
  30. 30.⚖️ 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 number of drops
  31. 31.🧺 Which of these is not needed for the turmeric test? (a) lemon juice (b) a mirror (c) water (d) white paper strips
  32. 32.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is what we measure. (a) True (b) False
  33. 33.🟡 Which of these turns turmeric reddish-brown? (a) detergent water (b) sugar water (c) salt water (d) tamarind water
  34. 34.True or false: soap solution is needed for the turmeric test. (a) False (b) True
  35. 35.🔍 Which is the odd one out? (a) soap solution (b) salt water (c) vinegar (d) lemon juice
  36. 36.True or false: vinegar is an acid. (a) True (b) False
  37. 37.True or false: a mirror is not needed for the turmeric test. (a) False (b) True
  38. 38.🧺 Do we need lemon juice for the turmeric test? (a) needed (b) not needed
  39. 39.🍋 A reddish turmeric spot gets a few drops of lemon juice. What happens? (a) it turns darker red (b) it disappears (c) it turns blue (d) it turns yellow again
  40. 40.🧺 Which of these is not needed for the turmeric test? (a) lemon juice (b) water (c) a magnet (d) a dropper or spoon

Answer key

  1. we change it
  2. not needed
  3. False
  4. stays yellow
  5. False
  6. tamarind water
  7. detergent water
  8. use only kitchen items
  9. needed
  10. the colour we see
  11. detergent water
  12. vinegar
  13. True
  14. needed
  15. turns reddish-brown
  16. we keep it the same
  17. yeast
  18. False
  19. needed
  20. True
  21. plain water
  22. reddish-brown
  23. False
  24. soap solution
  25. not needed
  26. not needed
  27. the liquid we test
  28. False
  29. a base
  30. the number of drops
  31. a mirror
  32. False
  33. detergent water
  34. True
  35. soap solution
  36. True
  37. True
  38. needed
  39. it turns yellow again
  40. a magnet

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