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Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 123 · 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.🟡 Turmeric paper meets lemon juice. What happens? (a) turns reddish-brown (b) stays yellow
  2. 2.True or false: sugar water turns turmeric reddish-brown. (a) False (b) True
  3. 3.🛟 Turmeric stains clothes. What should you wear? (a) a white party dress (b) your best clothes (c) your school uniform (d) an old shirt or apron
  4. 4.🧺 Do we need soap solution for the turmeric test? (a) not needed (b) needed
  5. 5.True or false: salt water keeps turmeric yellow. (a) True (b) False
  6. 6.True or false: yeast is needed for the turmeric test. (a) True (b) False
  7. 7.🟡 Which of these turns turmeric reddish-brown? (a) tamarind water (b) vinegar (c) lemon juice (d) soap solution
  8. 8.⚖️ 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 turmeric paper (c) the liquid we test (d) the light we look in
  9. 9.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a dropper or spoon (b) lemon juice (c) soap solution (d) a mirror
  10. 10.🧺 Which of these is needed for the turmeric test? (a) turmeric powder (b) a magnet (c) yeast (d) a mirror
  11. 11.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) reddish (b) green (c) bright blue (d) white at once
  12. 12.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is what we measure. (a) False (b) True
  13. 13.🫧 Which of these is a base? (a) vinegar (b) salt water (c) tamarind water (d) soap solution
  14. 14.🟡 Why does soap solution change turmeric’s colour? (a) soap is magnetic (b) soap is hot (c) soap water is a base (d) soap is an acid
  15. 15.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the colour we see”? (a) we change it (b) we keep it the same (c) we measure it
  16. 16.🧺 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
  17. 17.True or false: plain water turns turmeric reddish-brown. (a) False (b) True
  18. 18.True or false: vinegar turns turmeric reddish-brown. (a) True (b) False
  19. 19.🧺 Which of these is needed for the turmeric test? (a) a balloon (b) white paper strips (c) a comb (d) a mirror
  20. 20.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the light we look in (b) the number of drops (c) the liquid we test (d) the colour we see
  21. 21.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the light we look in is the one thing we change. (a) False (b) True
  22. 22.🧺 Which of these is not needed for the turmeric test? (a) water (b) white paper strips (c) yeast (d) lemon juice
  23. 23.True or false: a balloon is not needed for the turmeric test. (a) True (b) False
  24. 24.True or false: water is needed for the turmeric test. (a) False (b) True
  25. 25.🛟 Which rule keeps the turmeric test safe? (a) use only kitchen items (b) mix bathroom cleaners (c) sniff each bottle hard (d) sip each liquid
  26. 26.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it turns green (b) reddish-brown (c) it turns blue (d) it stays yellow
  27. 27.True or false: detergent water is a base. (a) False (b) True
  28. 28.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is the one thing we change. (a) False (b) True
  29. 29.True or false: lemon juice is needed for the turmeric test. (a) False (b) True
  30. 30.🟡 Which of these keeps turmeric yellow? (a) detergent water (b) soap solution (c) salt water (d) baking soda water
  31. 31.🟡 Which of these turns turmeric reddish-brown? (a) lemon juice (b) sugar water (c) detergent water (d) tamarind water
  32. 32.🫧 Is lemon juice an acid, a base or neutral? (a) a base (b) an acid (c) neutral
  33. 33.True or false: a magnet is not needed for the turmeric test. (a) False (b) True
  34. 34.⚖️ 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
  35. 35.True or false: vinegar is neutral. (a) False (b) True
  36. 36.🟡 Turmeric paper meets baking soda water. What happens? (a) stays yellow (b) turns reddish-brown
  37. 37.True or false: detergent water is an acid. (a) False (b) True
  38. 38.🫧 Which of these is an acid? (a) salt water (b) sugar water (c) baking soda water (d) vinegar
  39. 39.🔍 Which is the odd one out? (a) soap solution (b) detergent water (c) baking soda water (d) lemon juice
  40. 40.🧺 Do we need a comb for the turmeric test? (a) not needed (b) needed

Answer key

  1. stays yellow
  2. False
  3. an old shirt or apron
  4. needed
  5. True
  6. False
  7. soap solution
  8. the liquid we test
  9. a mirror
  10. turmeric powder
  11. reddish
  12. True
  13. soap solution
  14. soap water is a base
  15. we measure it
  16. yeast
  17. False
  18. False
  19. white paper strips
  20. the colour we see
  21. False
  22. yeast
  23. True
  24. True
  25. use only kitchen items
  26. reddish-brown
  27. True
  28. False
  29. True
  30. salt water
  31. detergent water
  32. an acid
  33. True
  34. we keep it the same
  35. False
  36. turns reddish-brown
  37. False
  38. vinegar
  39. lemon juice
  40. not needed

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