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Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 351 · 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: a balloon is not needed for the turmeric test. (a) False (b) True
  2. 2.🟡 Turmeric paper meets plain water. What happens? (a) stays yellow (b) turns reddish-brown
  3. 3.🛟 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
  4. 4.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the liquid we test”? (a) we keep it the same (b) we measure it (c) we change it
  5. 5.True or false: vinegar keeps turmeric yellow. (a) False (b) True
  6. 6.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the light we look in”? (a) we change it (b) we keep it the same (c) we measure it
  7. 7.🟡 Which of these keeps turmeric yellow? (a) detergent water (b) baking soda water (c) soap solution (d) plain water
  8. 8.🔍 Which is the odd one out? (a) plain water (b) baking soda water (c) salt water (d) lemon juice
  9. 9.🫧 Which of these is neutral? (a) vinegar (b) soap solution (c) detergent water (d) plain water
  10. 10.🧺 Do we need water for the turmeric test? (a) not needed (b) needed
  11. 11.⚖️ 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 light we look in (c) the liquid we test (d) the turmeric paper
  12. 12.🫧 Which of these is a base? (a) vinegar (b) salt water (c) plain water (d) soap solution
  13. 13.🫧 Which of these is an acid? (a) detergent water (b) lemon juice (c) soap solution (d) baking soda water
  14. 14.True or false: curd is a base. (a) True (b) False
  15. 15.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a battery cell (b) water (c) lemon juice (d) a dropper or spoon
  16. 16.🔍 Which is the odd one out? (a) detergent water (b) baking soda water (c) soap solution (d) salt water
  17. 17.🧺 Which of these is not needed for the turmeric test? (a) lemon juice (b) a balloon (c) water (d) white paper strips
  18. 18.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) yeast (b) turmeric powder (c) water (d) lemon juice
  19. 19.🧺 Which of these is not needed for the turmeric test? (a) a dropper or spoon (b) white paper strips (c) a mirror (d) water
  20. 20.🟡 Which of these keeps turmeric yellow? (a) soap solution (b) detergent water (c) lemon juice (d) baking soda water
  21. 21.True or false: detergent water is a base. (a) True (b) False
  22. 22.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is kept the same. (a) True (b) False
  23. 23.🍋 A drop of lemon juice falls on turmeric paper. What happens? (a) it turns blue (b) it turns red (c) it stays yellow (d) it turns black
  24. 24.🫧 Is lemon juice an acid, a base or neutral? (a) neutral (b) a base (c) an acid
  25. 25.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the light we look in is the one thing we change. (a) True (b) False
  26. 26.True or false: tamarind water is an acid. (a) False (b) True
  27. 27.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is the one thing we change. (a) False (b) True
  28. 28.🫧 Is sugar water an acid, a base or neutral? (a) an acid (b) neutral (c) a base
  29. 29.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the turmeric paper (b) the liquid we test (c) the colour we see
  30. 30.🔍 Which is the odd one out? (a) vinegar (b) sugar water (c) detergent water (d) lemon juice
  31. 31.🫧 Is curd an acid, a base or neutral? (a) a base (b) an acid (c) neutral
  32. 32.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it turns green (b) it stays yellow (c) reddish-brown (d) it turns blue
  33. 33.🧺 Which of these is not needed for the turmeric test? (a) white paper strips (b) yeast (c) lemon juice (d) a dropper or spoon
  34. 34.True or false: yeast is not needed for the turmeric test. (a) False (b) True
  35. 35.🧺 Do we need white paper strips for the turmeric test? (a) needed (b) not needed
  36. 36.True or false: salt water turns turmeric reddish-brown. (a) False (b) True
  37. 37.🔍 Which is the odd one out? (a) salt water (b) soap solution (c) vinegar (d) plain water
  38. 38.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is kept the same. (a) False (b) True
  39. 39.🟡 Turmeric paper meets detergent water. What happens? (a) stays yellow (b) turns reddish-brown
  40. 40.True or false: white paper strips is not needed for the turmeric test. (a) True (b) False

Answer key

  1. True
  2. stays yellow
  3. an old shirt or apron
  4. we change it
  5. True
  6. we keep it the same
  7. plain water
  8. baking soda water
  9. plain water
  10. needed
  11. the liquid we test
  12. soap solution
  13. lemon juice
  14. False
  15. a battery cell
  16. salt water
  17. a balloon
  18. yeast
  19. a mirror
  20. lemon juice
  21. True
  22. True
  23. it stays yellow
  24. an acid
  25. False
  26. True
  27. False
  28. neutral
  29. the turmeric paper
  30. detergent water
  31. an acid
  32. reddish-brown
  33. yeast
  34. True
  35. needed
  36. False
  37. soap solution
  38. True
  39. turns reddish-brown
  40. False

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