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Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 271 · 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.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a dropper or spoon (b) yeast (c) turmeric powder (d) white paper strips
  2. 2.True or false: soap solution turns turmeric reddish-brown. (a) False (b) True
  3. 3.🧺 Do we need yeast for the turmeric test? (a) not needed (b) needed
  4. 4.🧺 Which of these is not needed for the turmeric test? (a) soap solution (b) yeast (c) turmeric powder (d) lemon juice
  5. 5.🟡 Which of these keeps turmeric yellow? (a) soap solution (b) plain water (c) detergent water (d) baking soda water
  6. 6.True or false: a battery cell is not needed for the turmeric test. (a) False (b) True
  7. 7.True or false: soap solution is not needed for the turmeric test. (a) True (b) False
  8. 8.🟡 Turmeric paper meets lemon juice. What happens? (a) turns reddish-brown (b) stays yellow
  9. 9.🫧 Which of these is a base? (a) tamarind water (b) salt water (c) vinegar (d) baking soda water
  10. 10.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it stays yellow (b) it turns green (c) it turns blue (d) reddish-brown
  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 liquid we test (c) the number of drops (d) the colour we see
  12. 12.🟡 Which of these keeps turmeric yellow? (a) detergent water (b) soap solution (c) tamarind water (d) baking soda water
  13. 13.⚖️ 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
  14. 14.True or false: turmeric powder is not needed for the turmeric test. (a) True (b) False
  15. 15.⚖️ 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
  16. 16.True or false: detergent water turns turmeric reddish-brown. (a) True (b) False
  17. 17.🧺 Do we need a comb for the turmeric test? (a) not needed (b) needed
  18. 18.True or false: sugar water turns turmeric reddish-brown. (a) False (b) True
  19. 19.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a dropper or spoon (b) lemon juice (c) a mirror (d) white paper strips
  20. 20.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the light we look in”? (a) we keep it the same (b) we change it (c) we measure it
  21. 21.🛟 Turmeric stains clothes. What should you wear? (a) your school uniform (b) a white party dress (c) your best clothes (d) an old shirt or apron
  22. 22.🍋 A drop of lemon juice falls on turmeric paper. What happens? (a) it turns red (b) it stays yellow (c) it turns black (d) it turns blue
  23. 23.🧺 Do we need a magnet for the turmeric test? (a) needed (b) not needed
  24. 24.🔍 Which is the odd one out? (a) baking soda water (b) vinegar (c) lemon juice (d) salt water
  25. 25.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) bright blue (b) green (c) it stays white (d) reddish-brown
  26. 26.🧺 Which of these is needed for the turmeric test? (a) a battery cell (b) white paper strips (c) a balloon (d) yeast
  27. 27.🧺 Which of these is not needed for the turmeric test? (a) turmeric powder (b) a mirror (c) lemon juice (d) a dropper or spoon
  28. 28.True or false: orange juice is a base. (a) False (b) True
  29. 29.🫧 Is baking soda water an acid, a base or neutral? (a) an acid (b) a base (c) neutral
  30. 30.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the light we look in (b) the colour we see (c) the number of drops (d) the turmeric paper
  31. 31.🔍 Which is the odd one out? (a) baking soda water (b) lemon juice (c) detergent water (d) soap solution
  32. 32.🔍 Which is the odd one out? (a) detergent water (b) soap solution (c) salt water (d) baking soda water
  33. 33.⚖️ 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
  34. 34.True or false: sugar water is a base. (a) False (b) True
  35. 35.🔍 Which is the odd one out? (a) baking soda water (b) soap solution (c) plain water (d) detergent water
  36. 36.🫧 Is curd an acid, a base or neutral? (a) a base (b) neutral (c) an acid
  37. 37.🟡 Turmeric paper meets detergent water. What happens? (a) turns reddish-brown (b) stays yellow
  38. 38.🧺 Which of these is needed for the turmeric test? (a) a battery cell (b) lemon juice (c) a comb (d) a balloon
  39. 39.🧺 Do we need a balloon for the turmeric test? (a) not needed (b) needed
  40. 40.🫧 Which of these is an acid? (a) plain water (b) baking soda water (c) orange juice (d) sugar water

Answer key

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

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