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Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 68 · 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.True or false: salt water keeps turmeric yellow. (a) False (b) True
  2. 2.🟡 Turmeric paper meets soap solution. What happens? (a) stays yellow (b) turns reddish-brown
  3. 3.🧺 Do we need lemon juice for the turmeric test? (a) not needed (b) needed
  4. 4.🔍 Which is the odd one out? (a) plain water (b) vinegar (c) baking soda water (d) lemon juice
  5. 5.🧺 Do we need a balloon for the turmeric test? (a) not needed (b) needed
  6. 6.🧺 Do we need water for the turmeric test? (a) needed (b) not needed
  7. 7.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) turmeric powder (c) water (d) a mirror
  8. 8.True or false: turmeric powder is not needed for the turmeric test. (a) False (b) True
  9. 9.🧺 Which of these is not needed for the turmeric test? (a) lemon juice (b) a balloon (c) turmeric powder (d) white paper strips
  10. 10.True or false: water is needed for the turmeric test. (a) False (b) True
  11. 11.⚖️ 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
  12. 12.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) white paper strips (b) a dropper or spoon (c) turmeric powder (d) a balloon
  13. 13.True or false: a battery cell is needed for the turmeric test. (a) True (b) False
  14. 14.🟡 Turmeric paper meets sugar water. What happens? (a) stays yellow (b) turns reddish-brown
  15. 15.🔍 Which is the odd one out? (a) baking soda water (b) plain water (c) soap solution (d) detergent water
  16. 16.🧺 Do we need a comb for the turmeric test? (a) needed (b) not needed
  17. 17.🧺 Do we need turmeric powder for the turmeric test? (a) needed (b) not needed
  18. 18.True or false: soap solution turns turmeric reddish-brown. (a) True (b) False
  19. 19.🟡 Turmeric paper meets lemon juice. What happens? (a) turns reddish-brown (b) stays yellow
  20. 20.🛟 Turmeric stains clothes. What should you wear? (a) an old shirt or apron (b) your best clothes (c) a white party dress (d) your school uniform
  21. 21.🟡 Which of these turns turmeric reddish-brown? (a) salt water (b) vinegar (c) baking soda water (d) tamarind water
  22. 22.True or false: vinegar keeps turmeric yellow. (a) True (b) False
  23. 23.True or false: a magnet is not needed for the turmeric test. (a) True (b) False
  24. 24.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) soap solution (c) a battery cell (d) white paper strips
  25. 25.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) reddish-brown (b) it turns green (c) it stays yellow (d) it turns blue
  26. 26.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) white paper strips (c) a comb (d) water
  27. 27.🫧 Which of these is a base? (a) lemon juice (b) orange juice (c) detergent water (d) vinegar
  28. 28.⚖️ 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
  29. 29.🟡 Turmeric paper meets tamarind water. What happens? (a) turns reddish-brown (b) stays yellow
  30. 30.True or false: a mirror is needed for the turmeric test. (a) True (b) False
  31. 31.🧺 Do we need soap solution for the turmeric test? (a) not needed (b) needed
  32. 32.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) white paper strips (b) soap solution (c) water (d) a magnet
  33. 33.🧺 Which of these is not needed for the turmeric test? (a) white paper strips (b) water (c) yeast (d) a dropper or spoon
  34. 34.🫧 Which of these is an acid? (a) sugar water (b) lemon juice (c) detergent water (d) plain water
  35. 35.🧺 Do we need a battery cell for the turmeric test? (a) not needed (b) needed
  36. 36.⚖️ 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
  37. 37.🫧 Which of these is an acid? (a) soap solution (b) vinegar (c) baking soda water (d) sugar water
  38. 38.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) green (b) reddish (c) white at once (d) bright blue
  39. 39.🍋 A drop of lemon juice falls on turmeric paper. What happens? (a) it stays yellow (b) it turns black (c) it turns blue (d) it turns red
  40. 40.🟡 Which of these keeps turmeric yellow? (a) baking soda water (b) detergent water (c) soap solution (d) sugar water

Answer key

  1. True
  2. turns reddish-brown
  3. needed
  4. baking soda water
  5. not needed
  6. needed
  7. a mirror
  8. False
  9. a balloon
  10. True
  11. the liquid we test
  12. a balloon
  13. False
  14. stays yellow
  15. plain water
  16. not needed
  17. needed
  18. True
  19. stays yellow
  20. an old shirt or apron
  21. baking soda water
  22. True
  23. True
  24. a battery cell
  25. reddish-brown
  26. a comb
  27. detergent water
  28. we keep it the same
  29. stays yellow
  30. False
  31. needed
  32. a magnet
  33. yeast
  34. lemon juice
  35. not needed
  36. False
  37. vinegar
  38. reddish
  39. it stays yellow
  40. sugar water

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