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Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 379 · 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 liquid we test is what we measure. (a) False (b) True
  2. 2.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) lemon juice (c) white paper strips (d) yeast
  3. 3.🧺 Do we need turmeric powder for the turmeric test? (a) needed (b) not needed
  4. 4.🟡 Which of these keeps turmeric yellow? (a) baking soda water (b) lemon juice (c) detergent water (d) soap solution
  5. 5.🧺 Which of these is not needed for the turmeric test? (a) lemon juice (b) a magnet (c) water (d) soap solution
  6. 6.🟡 Turmeric paper meets lemon juice. What happens? (a) turns reddish-brown (b) stays yellow
  7. 7.🛟 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
  8. 8.⚖️ 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
  9. 9.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the colour we see (b) the turmeric paper (c) the liquid we test
  10. 10.True or false: soap solution turns turmeric reddish-brown. (a) False (b) True
  11. 11.True or false: salt water turns turmeric reddish-brown. (a) True (b) False
  12. 12.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the number of drops (b) the light we look in (c) the turmeric paper (d) the colour we see
  13. 13.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is what we measure. (a) False (b) True
  14. 14.True or false: curd is neutral. (a) True (b) False
  15. 15.🟡 Turmeric paper meets baking soda water. What happens? (a) stays yellow (b) turns reddish-brown
  16. 16.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a comb (b) water (c) turmeric powder (d) lemon juice
  17. 17.True or false: plain water keeps turmeric yellow. (a) True (b) False
  18. 18.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is the one thing we change. (a) True (b) False
  19. 19.🫧 Is baking soda water an acid, a base or neutral? (a) an acid (b) neutral (c) a base
  20. 20.True or false: a mirror is not needed for the turmeric test. (a) False (b) True
  21. 21.🧺 Do we need a magnet for the turmeric test? (a) needed (b) not needed
  22. 22.True or false: a dropper or spoon is needed for the turmeric test. (a) True (b) False
  23. 23.🧺 Which of these is not needed for the turmeric test? (a) turmeric powder (b) lemon juice (c) white paper strips (d) yeast
  24. 24.🍋 A drop of lemon juice falls on turmeric paper. What happens? (a) it turns blue (b) it stays yellow (c) it turns red (d) it turns black
  25. 25.🧺 Which of these is not needed for the turmeric test? (a) water (b) a balloon (c) soap solution (d) white paper strips
  26. 26.🟡 Turmeric paper meets detergent water. What happens? (a) stays yellow (b) turns reddish-brown
  27. 27.True or false: lemon juice is not needed for the turmeric test. (a) False (b) True
  28. 28.🧺 Which of these is needed for the turmeric test? (a) a magnet (b) turmeric powder (c) yeast (d) a mirror
  29. 29.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the colour we see (b) the turmeric paper (c) the light we look in (d) the liquid we test
  30. 30.🟡 Turmeric paper meets salt water. What happens? (a) stays yellow (b) turns reddish-brown
  31. 31.True or false: baking soda water keeps turmeric yellow. (a) True (b) False
  32. 32.True or false: a magnet is not needed for the turmeric test. (a) False (b) True
  33. 33.⚖️ 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
  34. 34.🫧 Is tamarind water an acid, a base or neutral? (a) neutral (b) a base (c) an acid
  35. 35.🟡 Which of these turns turmeric reddish-brown? (a) vinegar (b) sugar water (c) plain water (d) soap solution
  36. 36.True or false: tamarind water turns turmeric reddish-brown. (a) True (b) False
  37. 37.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the number of drops”? (a) we change it (b) we keep it the same (c) we measure it
  38. 38.🟡 Turmeric paper meets soap solution. What happens? (a) turns reddish-brown (b) stays yellow
  39. 39.🛟 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
  40. 40.True or false: sugar water keeps turmeric yellow. (a) True (b) False

Answer key

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

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