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Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 301 · 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.🟡 Turmeric paper meets tamarind water. What happens? (a) stays yellow (b) turns reddish-brown
  2. 2.True or false: lemon juice keeps turmeric yellow. (a) False (b) True
  3. 3.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is what we measure. (a) True (b) False
  4. 4.True or false: yeast is needed for the turmeric test. (a) True (b) False
  5. 5.🫧 Which of these is neutral? (a) baking soda water (b) lemon juice (c) sugar water (d) curd
  6. 6.🟡 Turmeric paper meets plain water. What happens? (a) turns reddish-brown (b) stays yellow
  7. 7.🟡 Turmeric paper meets soap solution. What happens? (a) stays yellow (b) turns reddish-brown
  8. 8.True or false: tamarind water turns turmeric reddish-brown. (a) True (b) False
  9. 9.True or false: lemon juice is not needed for the turmeric test. (a) True (b) False
  10. 10.🧺 Which of these is needed for the turmeric test? (a) yeast (b) turmeric powder (c) a mirror (d) a battery cell
  11. 11.🔍 Which is the odd one out? (a) plain water (b) lemon juice (c) vinegar (d) soap solution
  12. 12.🫧 Which of these is a base? (a) vinegar (b) tamarind water (c) lemon juice (d) detergent water
  13. 13.🟡 Which of these keeps turmeric yellow? (a) baking soda water (b) detergent water (c) soap solution (d) salt water
  14. 14.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a dropper or spoon (b) turmeric powder (c) a balloon (d) water
  15. 15.🔍 Which is the odd one out? (a) soap solution (b) vinegar (c) detergent water (d) baking soda water
  16. 16.True or false: detergent water is an acid. (a) True (b) False
  17. 17.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) soap solution (c) lemon juice (d) a comb
  18. 18.🟡 Which of these turns turmeric reddish-brown? (a) tamarind water (b) soap solution (c) lemon juice (d) salt water
  19. 19.True or false: soap solution is neutral. (a) False (b) True
  20. 20.🟡 Turmeric paper meets baking soda water. What happens? (a) stays yellow (b) turns reddish-brown
  21. 21.🟡 Turmeric paper meets sugar water. What happens? (a) turns reddish-brown (b) stays yellow
  22. 22.🧺 Which of these is not needed for the turmeric test? (a) a dropper or spoon (b) turmeric powder (c) a balloon (d) soap solution
  23. 23.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns red (b) it turns blue (c) it turns black (d) it stays yellow
  24. 24.True or false: plain water is an acid. (a) True (b) False
  25. 25.True or false: a battery cell is not needed for the turmeric test. (a) False (b) True
  26. 26.🫧 Is plain water an acid, a base or neutral? (a) a base (b) neutral (c) an acid
  27. 27.🫧 Is vinegar an acid, a base or neutral? (a) neutral (b) a base (c) an acid
  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 light we look in (b) the liquid we test (c) the colour we see
  30. 30.🔍 Which is the odd one out? (a) baking soda water (b) detergent water (c) soap solution (d) tamarind water
  31. 31.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is the one thing we change. (a) True (b) False
  32. 32.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is what we measure. (a) False (b) True
  33. 33.True or false: soap solution keeps turmeric yellow. (a) True (b) False
  34. 34.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the light we look in (b) the number of drops (c) the colour we see (d) the liquid we test
  35. 35.⚖️ 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 number of drops
  36. 36.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the number of drops (b) the colour we see (c) the liquid we test
  37. 37.⚖️ 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
  38. 38.⚖️ 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
  39. 39.True or false: vinegar is a base. (a) False (b) True
  40. 40.True or false: a magnet is needed for the turmeric test. (a) True (b) False

Answer key

  1. stays yellow
  2. True
  3. False
  4. False
  5. sugar water
  6. stays yellow
  7. turns reddish-brown
  8. False
  9. False
  10. turmeric powder
  11. soap solution
  12. detergent water
  13. salt water
  14. a balloon
  15. vinegar
  16. False
  17. a comb
  18. soap solution
  19. False
  20. turns reddish-brown
  21. stays yellow
  22. a balloon
  23. it stays yellow
  24. False
  25. True
  26. neutral
  27. an acid
  28. neutral
  29. the light we look in
  30. tamarind water
  31. False
  32. False
  33. False
  34. the colour we see
  35. the liquid we test
  36. the number of drops
  37. False
  38. we keep it the same
  39. False
  40. False

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