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Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 975 · 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.🧺 Do we need water for the turmeric test? (a) not needed (b) needed
  2. 2.📘 What do we call something that changes colour to show an acid or a base? (a) a pulley (b) a magnet (c) a prism (d) an indicator
  3. 3.🧺 Which of these is needed for the turmeric test? (a) a comb (b) a battery cell (c) white paper strips (d) yeast
  4. 4.True or false: soap solution is needed for the turmeric test. (a) True (b) False
  5. 5.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the number of drops (b) the colour we see (c) the liquid we test (d) the turmeric paper
  6. 6.🔍 Which is the odd one out? (a) sugar water (b) baking soda water (c) soap solution (d) detergent water
  7. 7.🫧 Is sugar water an acid, a base or neutral? (a) neutral (b) an acid (c) a base
  8. 8.🔮 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
  9. 9.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) water (c) turmeric powder (d) a magnet
  10. 10.🛟 Turmeric stains clothes. What should you wear? (a) your school uniform (b) an old shirt or apron (c) a white party dress (d) your best clothes
  11. 11.🔍 Which is the odd one out? (a) soap solution (b) plain water (c) baking soda water (d) detergent water
  12. 12.True or false: yeast is not needed for the turmeric test. (a) True (b) False
  13. 13.🟡 Which of these turns turmeric paper reddish-brown? (a) lemon juice (b) soap solution (c) sugar water (d) vinegar
  14. 14.🫧 Is plain water an acid, a base or neutral? (a) an acid (b) neutral (c) a base
  15. 15.True or false: yeast is needed for the turmeric test. (a) False (b) True
  16. 16.True or false: a battery cell is needed for the turmeric test. (a) True (b) False
  17. 17.🟡 Turmeric paper meets plain water. What happens? (a) stays yellow (b) turns reddish-brown
  18. 18.🫧 Which of these is neutral? (a) lemon juice (b) soap solution (c) salt water (d) baking soda water
  19. 19.True or false: detergent water is an acid. (a) False (b) True
  20. 20.True or false: soap solution keeps turmeric yellow. (a) False (b) True
  21. 21.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the liquid we test (b) the colour we see (c) the turmeric paper
  22. 22.🟡 Which of these turns turmeric reddish-brown? (a) salt water (b) plain water (c) vinegar (d) baking soda water
  23. 23.🫧 Is orange juice an acid, a base or neutral? (a) an acid (b) neutral (c) a base
  24. 24.True or false: a magnet is not needed for the turmeric test. (a) True (b) False
  25. 25.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is what we measure. (a) True (b) False
  26. 26.True or false: a comb is not needed for the turmeric test. (a) True (b) False
  27. 27.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the colour we see”? (a) we measure it (b) we change it (c) we keep it the same
  28. 28.🧺 Do we need a dropper or spoon for the turmeric test? (a) not needed (b) needed
  29. 29.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) white paper strips (b) turmeric powder (c) a balloon (d) water
  30. 30.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns black (b) it turns red (c) it stays yellow (d) it turns blue
  31. 31.⚖️ 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
  32. 32.🧺 Which of these is not needed for the turmeric test? (a) lemon juice (b) water (c) soap solution (d) a balloon
  33. 33.🫧 Is soap solution an acid, a base or neutral? (a) an acid (b) a base (c) neutral
  34. 34.True or false: lemon juice keeps turmeric yellow. (a) True (b) False
  35. 35.🧺 Do we need a comb for the turmeric test? (a) not needed (b) needed
  36. 36.🟡 Turmeric paper meets lemon juice. What happens? (a) turns reddish-brown (b) stays yellow
  37. 37.🟡 Which of these keeps turmeric yellow? (a) detergent water (b) sugar water (c) baking soda water (d) soap solution
  38. 38.🟡 Turmeric paper meets soap solution. What happens? (a) stays yellow (b) turns reddish-brown
  39. 39.🧺 Do we need white paper strips for the turmeric test? (a) not needed (b) needed
  40. 40.🫧 Is detergent water an acid, a base or neutral? (a) a base (b) neutral (c) an acid

Answer key

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

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