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Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 572 · 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: tamarind water turns turmeric reddish-brown. (a) True (b) False
  2. 2.🔍 Which is the odd one out? (a) baking soda water (b) soap solution (c) lemon juice (d) detergent water
  3. 3.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the turmeric paper”? (a) we measure it (b) we change it (c) we keep it the same
  4. 4.🧺 Which of these is needed for the turmeric test? (a) a comb (b) a balloon (c) yeast (d) white paper strips
  5. 5.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the number of drops (b) the turmeric paper (c) the liquid we test (d) the colour we see
  6. 6.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) reddish-brown (b) it stays white (c) bright blue (d) green
  7. 7.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the light we look in is kept the same. (a) True (b) False
  8. 8.True or false: salt water is neutral. (a) False (b) True
  9. 9.True or false: white paper strips is needed for the turmeric test. (a) False (b) True
  10. 10.🟡 Turmeric paper meets detergent water. What happens? (a) stays yellow (b) turns reddish-brown
  11. 11.🧺 Which of these is needed for the turmeric test? (a) a mirror (b) a balloon (c) a magnet (d) a dropper or spoon
  12. 12.🟡 Turmeric paper meets vinegar. What happens? (a) turns reddish-brown (b) stays yellow
  13. 13.🟡 Which of these turns turmeric reddish-brown? (a) vinegar (b) salt water (c) soap solution (d) tamarind water
  14. 14.🧺 Which of these is needed for the turmeric test? (a) soap solution (b) a battery cell (c) a magnet (d) a balloon
  15. 15.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is kept the same. (a) False (b) True
  16. 16.True or false: a comb is needed for the turmeric test. (a) True (b) False
  17. 17.🛟 Turmeric stains clothes. What should you wear? (a) your best clothes (b) your school uniform (c) an old shirt or apron (d) a white party dress
  18. 18.True or false: water is not needed for the turmeric test. (a) True (b) False
  19. 19.🫧 Which of these is neutral? (a) detergent water (b) plain water (c) baking soda water (d) orange juice
  20. 20.🟡 Which of these turns turmeric reddish-brown? (a) vinegar (b) tamarind water (c) baking soda water (d) lemon juice
  21. 21.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the light we look in”? (a) we measure it (b) we keep it the same (c) we change it
  22. 22.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the turmeric paper (b) the light we look in (c) the colour we see (d) the liquid we test
  23. 23.🧺 Which of these is not needed for the turmeric test? (a) lemon juice (b) a dropper or spoon (c) turmeric powder (d) a balloon
  24. 24.🟡 Turmeric paper meets soap solution. What happens? (a) stays yellow (b) turns reddish-brown
  25. 25.True or false: a mirror is needed for the turmeric test. (a) False (b) True
  26. 26.True or false: turmeric powder is needed for the turmeric test. (a) True (b) False
  27. 27.🔍 Which is the odd one out? (a) baking soda water (b) lemon juice (c) sugar water (d) salt water
  28. 28.True or false: salt water turns turmeric reddish-brown. (a) False (b) True
  29. 29.🫧 Is vinegar an acid, a base or neutral? (a) a base (b) neutral (c) an acid
  30. 30.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is the one thing we change. (a) True (b) False
  31. 31.True or false: vinegar is an acid. (a) False (b) True
  32. 32.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) a magnet (c) white paper strips (d) a dropper or spoon
  33. 33.True or false: soap solution turns turmeric reddish-brown. (a) False (b) True
  34. 34.🟡 Turmeric paper meets baking soda water. What happens? (a) stays yellow (b) turns reddish-brown
  35. 35.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is the one thing we change. (a) True (b) False
  36. 36.True or false: detergent water keeps turmeric yellow. (a) False (b) True
  37. 37.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) reddish-brown (b) it turns green (c) it turns blue (d) it stays yellow
  38. 38.🧺 Which of these is needed for the turmeric test? (a) a magnet (b) a mirror (c) yeast (d) water
  39. 39.🧺 Do we need turmeric powder for the turmeric test? (a) not needed (b) needed
  40. 40.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it stays yellow (b) it turns black (c) it turns red (d) it turns blue

Answer key

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

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