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Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 84 · 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: salt water keeps turmeric yellow. (a) False (b) True
  2. 2.🧺 Do we need white paper strips for the turmeric test? (a) needed (b) not needed
  3. 3.🛟 Turmeric stains clothes. What should you wear? (a) an old shirt or apron (b) a white party dress (c) your best clothes (d) your school uniform
  4. 4.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is the one thing we change. (a) False (b) True
  5. 5.True or false: a dropper or spoon is needed for the turmeric test. (a) True (b) False
  6. 6.True or false: white paper strips is needed for the turmeric test. (a) True (b) False
  7. 7.🔍 Which is the odd one out? (a) vinegar (b) lemon juice (c) soap solution (d) plain water
  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.⚖️ 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
  10. 10.🫧 Which of these is an acid? (a) soap solution (b) orange juice (c) baking soda water (d) sugar water
  11. 11.🧺 Which of these is needed for the turmeric test? (a) turmeric powder (b) a mirror (c) a balloon (d) a comb
  12. 12.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the colour we see”? (a) we keep it the same (b) we measure it (c) we change it
  13. 13.True or false: lemon juice is needed for the turmeric test. (a) True (b) False
  14. 14.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) lemon juice (c) a dropper or spoon (d) a mirror
  15. 15.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the liquid we test”? (a) we measure it (b) we keep it the same (c) we change it
  16. 16.True or false: lemon juice is an acid. (a) True (b) False
  17. 17.True or false: sugar water keeps turmeric yellow. (a) False (b) True
  18. 18.🫧 Which of these is a base? (a) plain water (b) salt water (c) detergent water (d) lemon juice
  19. 19.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is kept the same. (a) False (b) True
  20. 20.True or false: detergent water turns turmeric reddish-brown. (a) True (b) False
  21. 21.True or false: soap solution keeps turmeric yellow. (a) False (b) True
  22. 22.🫧 Which of these is a base? (a) orange juice (b) baking soda water (c) curd (d) salt water
  23. 23.🟡 Which of these turns turmeric paper reddish-brown? (a) sugar water (b) lemon juice (c) soap solution (d) vinegar
  24. 24.🫧 Is curd an acid, a base or neutral? (a) an acid (b) a base (c) neutral
  25. 25.🛟 Which rule keeps the turmeric test safe? (a) sip each liquid (b) use only kitchen items (c) mix bathroom cleaners (d) sniff each bottle hard
  26. 26.🔍 Which is the odd one out? (a) vinegar (b) tamarind water (c) baking soda water (d) plain water
  27. 27.🔍 Which is the odd one out? (a) baking soda water (b) detergent water (c) soap solution (d) salt water
  28. 28.⚖️ 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 liquid we test (c) the light we look in (d) the number of drops
  29. 29.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the number of drops (b) the liquid we test (c) the colour we see
  30. 30.True or false: baking soda water is a base. (a) True (b) False
  31. 31.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a dropper or spoon (b) lemon juice (c) yeast (d) water
  32. 32.🫧 Which of these is neutral? (a) vinegar (b) detergent water (c) sugar water (d) tamarind water
  33. 33.🧺 Which of these is needed for the turmeric test? (a) lemon juice (b) a magnet (c) a comb (d) a mirror
  34. 34.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) reddish-brown (b) green (c) it stays white (d) bright blue
  35. 35.True or false: sugar water is neutral. (a) False (b) True
  36. 36.⚖️ 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
  37. 37.🫧 Is vinegar an acid, a base or neutral? (a) a base (b) an acid (c) neutral
  38. 38.True or false: tamarind water keeps turmeric yellow. (a) False (b) True
  39. 39.🧺 Which of these is needed for the turmeric test? (a) a dropper or spoon (b) yeast (c) a mirror (d) a balloon
  40. 40.🔍 Which is the odd one out? (a) lemon juice (b) detergent water (c) soap solution (d) baking soda water

Answer key

  1. True
  2. needed
  3. an old shirt or apron
  4. False
  5. True
  6. True
  7. soap solution
  8. reddish-brown
  9. False
  10. orange juice
  11. turmeric powder
  12. we measure it
  13. True
  14. a mirror
  15. we change it
  16. True
  17. True
  18. detergent water
  19. True
  20. True
  21. False
  22. baking soda water
  23. soap solution
  24. an acid
  25. use only kitchen items
  26. baking soda water
  27. salt water
  28. the liquid we test
  29. the number of drops
  30. True
  31. yeast
  32. sugar water
  33. lemon juice
  34. reddish-brown
  35. True
  36. True
  37. an acid
  38. True
  39. a dropper or spoon
  40. lemon juice

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