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Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 711 · 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.

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

Answer key

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

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