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Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 57 · 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 sugar water. What happens? (a) stays yellow (b) turns reddish-brown
  2. 2.⚖️ 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
  3. 3.🧺 Do we need a battery cell for the turmeric test? (a) needed (b) not needed
  4. 4.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) green (b) white at once (c) reddish (d) bright blue
  5. 5.True or false: plain water keeps turmeric yellow. (a) True (b) False
  6. 6.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns red (b) it stays yellow (c) it turns black (d) it turns blue
  7. 7.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it stays yellow (b) it turns blue (c) it turns green (d) reddish-brown
  8. 8.True or false: plain water is neutral. (a) False (b) True
  9. 9.True or false: baking soda water is neutral. (a) False (b) True
  10. 10.True or false: detergent water keeps turmeric yellow. (a) False (b) True
  11. 11.True or false: plain water is an acid. (a) False (b) True
  12. 12.🟡 Which of these turns turmeric reddish-brown? (a) salt water (b) vinegar (c) detergent water (d) plain water
  13. 13.🔍 Which is the odd one out? (a) baking soda water (b) salt water (c) detergent water (d) soap solution
  14. 14.🧺 Do we need a magnet for the turmeric test? (a) not needed (b) needed
  15. 15.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the turmeric paper”? (a) we measure it (b) we keep it the same (c) we change it
  16. 16.🧺 Which of these is not needed for the turmeric test? (a) a dropper or spoon (b) turmeric powder (c) water (d) yeast
  17. 17.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) soap solution (c) a mirror (d) a dropper or spoon
  18. 18.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the colour we see”? (a) we measure it (b) we change it (c) we keep it the same
  19. 19.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) water (c) lemon juice (d) a comb
  20. 20.🟡 Turmeric paper meets plain water. What happens? (a) stays yellow (b) turns reddish-brown
  21. 21.True or false: lemon juice is not needed for the turmeric test. (a) True (b) False
  22. 22.True or false: soap solution turns turmeric reddish-brown. (a) False (b) True
  23. 23.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the liquid we test”? (a) we measure it (b) we change it (c) we keep it the same
  24. 24.🧺 Do we need soap solution for the turmeric test? (a) needed (b) not needed
  25. 25.🛟 Which rule keeps the turmeric test safe? (a) use only kitchen items (b) sniff each bottle hard (c) mix bathroom cleaners (d) sip each liquid
  26. 26.True or false: baking soda water is a base. (a) True (b) False
  27. 27.🫧 Which of these is an acid? (a) detergent water (b) vinegar (c) soap solution (d) sugar water
  28. 28.🧺 Do we need yeast for the turmeric test? (a) not needed (b) needed
  29. 29.🧺 Do we need a dropper or spoon for the turmeric test? (a) needed (b) not needed
  30. 30.True or false: soap solution is needed for the turmeric test. (a) True (b) False
  31. 31.True or false: white paper strips is not needed for the turmeric test. (a) True (b) False
  32. 32.🛟 Turmeric stains clothes. What should you wear? (a) a white party dress (b) your best clothes (c) your school uniform (d) an old shirt or apron
  33. 33.🟡 Turmeric paper meets tamarind water. What happens? (a) stays yellow (b) turns reddish-brown
  34. 34.True or false: a magnet is needed for the turmeric test. (a) False (b) True
  35. 35.🧺 Which of these is not needed for the turmeric test? (a) white paper strips (b) soap solution (c) turmeric powder (d) a comb
  36. 36.🔍 Which is the odd one out? (a) soap solution (b) detergent water (c) baking soda water (d) lemon juice
  37. 37.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the colour we see (b) the light we look in (c) the liquid we test
  38. 38.🫧 Is orange juice an acid, a base or neutral? (a) a base (b) an acid (c) neutral
  39. 39.🧺 Which of these is not needed for the turmeric test? (a) soap solution (b) water (c) a magnet (d) white paper strips
  40. 40.True or false: a magnet is not needed for the turmeric test. (a) True (b) False

Answer key

  1. stays yellow
  2. we keep it the same
  3. not needed
  4. reddish
  5. True
  6. it stays yellow
  7. reddish-brown
  8. True
  9. False
  10. False
  11. False
  12. detergent water
  13. salt water
  14. not needed
  15. we keep it the same
  16. yeast
  17. a mirror
  18. we measure it
  19. a comb
  20. stays yellow
  21. False
  22. True
  23. we change it
  24. needed
  25. use only kitchen items
  26. True
  27. vinegar
  28. not needed
  29. needed
  30. True
  31. False
  32. an old shirt or apron
  33. stays yellow
  34. False
  35. a comb
  36. lemon juice
  37. the light we look in
  38. an acid
  39. a magnet
  40. True

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