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Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 496 · 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 soap solution for the turmeric test? (a) needed (b) not needed
  2. 2.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the number of drops”? (a) we measure it (b) we keep it the same (c) we change it
  3. 3.⚖️ 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
  4. 4.🟡 Turmeric paper meets salt water. What happens? (a) turns reddish-brown (b) stays yellow
  5. 5.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns red (b) it turns black (c) it stays yellow (d) it turns blue
  6. 6.⚖️ 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 change it (c) we keep it the same
  7. 7.True or false: detergent water is a base. (a) False (b) True
  8. 8.🫧 Is curd an acid, a base or neutral? (a) an acid (b) neutral (c) a base
  9. 9.🧺 Which of these is needed for the turmeric test? (a) a battery cell (b) a balloon (c) white paper strips (d) a comb
  10. 10.⚖️ 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 light we look in (c) the turmeric paper (d) the number of drops
  11. 11.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) lemon juice (c) water (d) a balloon
  12. 12.🔮 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
  13. 13.True or false: a balloon is needed for the turmeric test. (a) True (b) False
  14. 14.🫧 Which of these is neutral? (a) curd (b) sugar water (c) detergent water (d) lemon juice
  15. 15.True or false: water is not needed for the turmeric test. (a) False (b) True
  16. 16.🟡 Which of these keeps turmeric yellow? (a) detergent water (b) plain water (c) soap solution (d) baking soda water
  17. 17.⚖️ 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 change it (c) we measure it
  18. 18.True or false: sugar water turns turmeric reddish-brown. (a) True (b) False
  19. 19.True or false: vinegar turns turmeric reddish-brown. (a) True (b) False
  20. 20.True or false: soap solution is neutral. (a) True (b) False
  21. 21.🟡 Turmeric paper meets soap solution. What happens? (a) turns reddish-brown (b) stays yellow
  22. 22.🫧 Is vinegar an acid, a base or neutral? (a) a base (b) neutral (c) an acid
  23. 23.🔍 Which is the odd one out? (a) sugar water (b) vinegar (c) soap solution (d) lemon juice
  24. 24.⚖️ 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
  25. 25.True or false: a magnet is needed for the turmeric test. (a) False (b) True
  26. 26.🧺 Which of these is not needed for the turmeric test? (a) a dropper or spoon (b) a magnet (c) water (d) soap solution
  27. 27.🧺 Do we need a comb for the turmeric test? (a) not needed (b) needed
  28. 28.🛟 Turmeric stains clothes. What should you wear? (a) your school uniform (b) a white party dress (c) your best clothes (d) an old shirt or apron
  29. 29.🔍 Which is the odd one out? (a) baking soda water (b) vinegar (c) soap solution (d) detergent water
  30. 30.🛟 Which rule keeps the turmeric test safe? (a) mix bathroom cleaners (b) sip each liquid (c) sniff each bottle hard (d) use only kitchen items
  31. 31.🧺 Do we need yeast for the turmeric test? (a) needed (b) not needed
  32. 32.🫧 Which of these is a base? (a) vinegar (b) lemon juice (c) tamarind water (d) detergent water
  33. 33.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is kept the same. (a) True (b) False
  34. 34.🫧 Which of these is a base? (a) vinegar (b) sugar water (c) baking soda water (d) lemon juice
  35. 35.True or false: turmeric powder is not needed for the turmeric test. (a) False (b) True
  36. 36.🟡 Which of these turns turmeric reddish-brown? (a) sugar water (b) plain water (c) vinegar (d) detergent water
  37. 37.🟡 Which of these turns turmeric reddish-brown? (a) plain water (b) tamarind water (c) salt water (d) baking soda water
  38. 38.True or false: sugar water keeps turmeric yellow. (a) False (b) True
  39. 39.🧺 Which of these is not needed for the turmeric test? (a) water (b) turmeric powder (c) white paper strips (d) a balloon
  40. 40.🔍 Which is the odd one out? (a) soap solution (b) baking soda water (c) detergent water (d) plain water

Answer key

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

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