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Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 311 · 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? True or false: the number of drops is kept the same. (a) True (b) False
  2. 2.🛟 Which rule keeps the turmeric test safe? (a) mix bathroom cleaners (b) sip each liquid (c) sniff each bottle hard (d) use only kitchen items
  3. 3.True or false: soap solution is neutral. (a) False (b) True
  4. 4.🟡 Turmeric paper meets plain water. What happens? (a) turns reddish-brown (b) stays yellow
  5. 5.True or false: plain water turns turmeric reddish-brown. (a) True (b) False
  6. 6.🧺 Which of these is needed for the turmeric test? (a) a battery cell (b) a magnet (c) a balloon (d) lemon juice
  7. 7.🫧 Is sugar water an acid, a base or neutral? (a) an acid (b) a base (c) neutral
  8. 8.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the colour we see (b) the turmeric paper (c) the number of drops (d) the liquid we test
  9. 9.True or false: sugar water is neutral. (a) True (b) False
  10. 10.🔍 Which is the odd one out? (a) plain water (b) detergent water (c) baking soda water (d) soap solution
  11. 11.True or false: salt water is a base. (a) False (b) True
  12. 12.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) a dropper or spoon (c) white paper strips (d) yeast
  13. 13.True or false: tamarind water is an acid. (a) True (b) False
  14. 14.🫧 Is vinegar an acid, a base or neutral? (a) a base (b) an acid (c) neutral
  15. 15.True or false: salt water is neutral. (a) False (b) True
  16. 16.⚖️ 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
  17. 17.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the turmeric paper”? (a) we change it (b) we measure it (c) we keep it the same
  18. 18.True or false: turmeric powder is needed for the turmeric test. (a) False (b) True
  19. 19.🟡 Which of these keeps turmeric yellow? (a) detergent water (b) vinegar (c) soap solution (d) baking soda water
  20. 20.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the turmeric paper (b) the colour we see (c) the liquid we test (d) the light we look in
  21. 21.🧺 Do we need a mirror for the turmeric test? (a) not needed (b) needed
  22. 22.⚖️ 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
  23. 23.🧺 Do we need a comb for the turmeric test? (a) needed (b) not needed
  24. 24.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the light we look in”? (a) we change it (b) we measure it (c) we keep it the same
  25. 25.True or false: sugar water is a base. (a) True (b) False
  26. 26.True or false: baking soda water keeps turmeric yellow. (a) False (b) True
  27. 27.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) a battery cell (c) water (d) white paper strips
  28. 28.🧺 Which of these is needed for the turmeric test? (a) yeast (b) a comb (c) soap solution (d) a magnet
  29. 29.True or false: turmeric powder is not needed for the turmeric test. (a) False (b) True
  30. 30.🧺 Do we need a battery cell for the turmeric test? (a) not needed (b) needed
  31. 31.⚖️ 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
  32. 32.🫧 Which of these is an acid? (a) tamarind water (b) detergent water (c) soap solution (d) baking soda water
  33. 33.🟡 Why does soap solution change turmeric’s colour? (a) soap is an acid (b) soap is hot (c) soap water is a base (d) soap is magnetic
  34. 34.⚖️ 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
  35. 35.True or false: plain water is a base. (a) True (b) False
  36. 36.🟡 Which of these turns turmeric reddish-brown? (a) baking soda water (b) lemon juice (c) vinegar (d) salt water
  37. 37.🧺 Do we need a dropper or spoon for the turmeric test? (a) not needed (b) needed
  38. 38.🧺 Do we need a magnet for the turmeric test? (a) not needed (b) needed
  39. 39.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the number of drops (b) the liquid we test (c) the colour we see
  40. 40.True or false: water is needed for the turmeric test. (a) False (b) True

Answer key

  1. True
  2. use only kitchen items
  3. False
  4. stays yellow
  5. False
  6. lemon juice
  7. neutral
  8. the colour we see
  9. True
  10. plain water
  11. False
  12. yeast
  13. True
  14. an acid
  15. True
  16. we measure it
  17. we keep it the same
  18. True
  19. vinegar
  20. the liquid we test
  21. not needed
  22. we change it
  23. not needed
  24. we keep it the same
  25. False
  26. False
  27. a battery cell
  28. soap solution
  29. False
  30. not needed
  31. True
  32. tamarind water
  33. soap water is a base
  34. the turmeric paper
  35. False
  36. baking soda water
  37. needed
  38. not needed
  39. the number of drops
  40. True

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