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Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 252 · 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.🟡 Which of these turns turmeric reddish-brown? (a) vinegar (b) detergent water (c) plain water (d) sugar water
  2. 2.True or false: soap solution is a base. (a) False (b) True
  3. 3.🧺 Which of these is needed for the turmeric test? (a) a magnet (b) soap solution (c) a battery cell (d) a mirror
  4. 4.🟡 Which of these keeps turmeric yellow? (a) tamarind water (b) baking soda water (c) detergent water (d) soap solution
  5. 5.🔍 Which is the odd one out? (a) sugar water (b) soap solution (c) salt water (d) plain water
  6. 6.True or false: a balloon is needed for the turmeric test. (a) False (b) True
  7. 7.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns blue (b) it stays yellow (c) it turns black (d) it turns red
  8. 8.🧺 Which of these is not needed for the turmeric test? (a) turmeric powder (b) soap solution (c) lemon juice (d) yeast
  9. 9.🧺 Do we need soap solution for the turmeric test? (a) not needed (b) needed
  10. 10.🛟 Turmeric stains clothes. What should you wear? (a) a white party dress (b) an old shirt or apron (c) your school uniform (d) your best clothes
  11. 11.🟡 Turmeric paper meets sugar water. What happens? (a) turns reddish-brown (b) stays yellow
  12. 12.⚖️ 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
  13. 13.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it stays yellow (b) it turns green (c) reddish-brown (d) it turns blue
  14. 14.🟡 Which of these keeps turmeric yellow? (a) detergent water (b) vinegar (c) soap solution (d) baking soda water
  15. 15.🟡 Which of these keeps turmeric yellow? (a) soap solution (b) plain water (c) detergent water (d) baking soda water
  16. 16.🧺 Which of these is not needed for the turmeric test? (a) a dropper or spoon (b) lemon juice (c) a mirror (d) soap solution
  17. 17.🫧 Which of these is neutral? (a) sugar water (b) tamarind water (c) soap solution (d) curd
  18. 18.🍋 A reddish turmeric spot gets a few drops of lemon juice. What happens? (a) it turns yellow again (b) it turns darker red (c) it turns blue (d) it disappears
  19. 19.🛟 Which rule keeps the turmeric test safe? (a) sniff each bottle hard (b) mix bathroom cleaners (c) use only kitchen items (d) sip each liquid
  20. 20.🟡 Turmeric paper meets plain water. What happens? (a) turns reddish-brown (b) stays yellow
  21. 21.🧺 Which of these is not needed for the turmeric test? (a) white paper strips (b) soap solution (c) a comb (d) a dropper or spoon
  22. 22.⚖️ 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
  23. 23.🧺 Do we need a magnet for the turmeric test? (a) needed (b) not needed
  24. 24.🧺 Which of these is not needed for the turmeric test? (a) turmeric powder (b) white paper strips (c) water (d) a magnet
  25. 25.True or false: salt water turns turmeric reddish-brown. (a) True (b) False
  26. 26.🧺 Which of these is needed for the turmeric test? (a) a balloon (b) yeast (c) water (d) a mirror
  27. 27.📘 What do we call something that changes colour to show an acid or a base? (a) an indicator (b) a magnet (c) a pulley (d) a prism
  28. 28.⚖️ 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
  29. 29.🫧 Which of these is an acid? (a) baking soda water (b) vinegar (c) soap solution (d) detergent water
  30. 30.🧺 Do we need a battery cell for the turmeric test? (a) not needed (b) needed
  31. 31.True or false: turmeric powder is not needed for the turmeric test. (a) True (b) False
  32. 32.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the number of drops”? (a) we keep it the same (b) we change it (c) we measure it
  33. 33.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the light we look in is kept the same. (a) False (b) True
  34. 34.🧺 Do we need lemon juice for the turmeric test? (a) needed (b) not needed
  35. 35.True or false: a dropper or spoon is not needed for the turmeric test. (a) False (b) True
  36. 36.True or false: baking soda water keeps turmeric yellow. (a) False (b) True
  37. 37.True or false: soap solution turns turmeric reddish-brown. (a) True (b) False
  38. 38.True or false: white paper strips is not needed for the turmeric test. (a) True (b) False
  39. 39.🟡 Turmeric paper meets vinegar. What happens? (a) turns reddish-brown (b) stays yellow
  40. 40.🧺 Which of these is not needed for the turmeric test? (a) a battery cell (b) lemon juice (c) a dropper or spoon (d) soap solution

Answer key

  1. detergent water
  2. True
  3. soap solution
  4. tamarind water
  5. soap solution
  6. False
  7. it stays yellow
  8. yeast
  9. needed
  10. an old shirt or apron
  11. stays yellow
  12. we keep it the same
  13. reddish-brown
  14. vinegar
  15. plain water
  16. a mirror
  17. sugar water
  18. it turns yellow again
  19. use only kitchen items
  20. stays yellow
  21. a comb
  22. False
  23. not needed
  24. a magnet
  25. False
  26. water
  27. an indicator
  28. True
  29. vinegar
  30. not needed
  31. False
  32. we keep it the same
  33. True
  34. needed
  35. False
  36. False
  37. True
  38. False
  39. stays yellow
  40. a battery cell

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