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Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 712 · 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) turmeric powder (c) white paper strips (d) a mirror
  2. 2.🟡 Turmeric paper meets baking soda water. What happens? (a) turns reddish-brown (b) stays yellow
  3. 3.True or false: soap solution turns turmeric reddish-brown. (a) True (b) False
  4. 4.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is kept the same. (a) False (b) True
  5. 5.True or false: a magnet is not needed for the turmeric test. (a) False (b) True
  6. 6.🧺 Which of these is not needed for the turmeric test? (a) lemon juice (b) turmeric powder (c) soap solution (d) a balloon
  7. 7.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) a comb (c) turmeric powder (d) a dropper or spoon
  8. 8.🧺 Do we need white paper strips for the turmeric test? (a) not needed (b) needed
  9. 9.🧺 Do we need a comb for the turmeric test? (a) not needed (b) needed
  10. 10.🫧 Which of these is a base? (a) curd (b) tamarind water (c) baking soda water (d) vinegar
  11. 11.🟡 Turmeric paper meets soap solution. What happens? (a) stays yellow (b) turns reddish-brown
  12. 12.🧺 Which of these is needed for the turmeric test? (a) a battery cell (b) soap solution (c) yeast (d) a balloon
  13. 13.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is what we measure. (a) True (b) False
  14. 14.🫧 Which of these is a base? (a) plain water (b) salt water (c) soap solution (d) vinegar
  15. 15.True or false: baking soda water is a base. (a) True (b) False
  16. 16.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns black (b) it turns blue (c) it stays yellow (d) it turns red
  17. 17.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the liquid we test (b) the number of drops (c) the colour we see (d) the light we look in
  18. 18.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is kept the same. (a) True (b) False
  19. 19.True or false: baking soda water is an acid. (a) True (b) False
  20. 20.🔍 Which is the odd one out? (a) detergent water (b) lemon juice (c) baking soda water (d) soap solution
  21. 21.🟡 Turmeric paper meets salt water. What happens? (a) stays yellow (b) turns reddish-brown
  22. 22.🔍 Which is the odd one out? (a) baking soda water (b) detergent water (c) plain water (d) soap solution
  23. 23.🧺 Which of these is needed for the turmeric test? (a) yeast (b) a mirror (c) turmeric powder (d) a comb
  24. 24.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the turmeric paper (b) the colour we see (c) the liquid we test
  25. 25.True or false: white paper strips is needed for the turmeric test. (a) True (b) False
  26. 26.🧺 Do we need a magnet for the turmeric test? (a) not needed (b) needed
  27. 27.True or false: vinegar turns turmeric reddish-brown. (a) False (b) True
  28. 28.⚖️ 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 measure it (c) we keep it the same
  29. 29.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) reddish-brown (b) it stays white (c) green (d) bright blue
  30. 30.True or false: yeast is needed for the turmeric test. (a) True (b) False
  31. 31.🧺 Do we need turmeric powder for the turmeric test? (a) not needed (b) needed
  32. 32.🔍 Which is the odd one out? (a) tamarind water (b) baking soda water (c) soap solution (d) detergent water
  33. 33.True or false: soap solution is not needed for the turmeric test. (a) True (b) False
  34. 34.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) white at once (b) bright blue (c) reddish (d) green
  35. 35.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) white paper strips (c) turmeric powder (d) yeast
  36. 36.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a battery cell (b) turmeric powder (c) lemon juice (d) water
  37. 37.🫧 Which of these is neutral? (a) plain water (b) detergent water (c) orange juice (d) vinegar
  38. 38.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the light we look in (b) the liquid we test (c) the colour we see (d) the number of drops
  39. 39.True or false: sugar water is an acid. (a) False (b) True
  40. 40.🧺 Which of these is not needed for the turmeric test? (a) white paper strips (b) a mirror (c) turmeric powder (d) soap solution

Answer key

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

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