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Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 243 · 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.

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

Answer key

  1. sugar water
  2. reddish-brown
  3. use only kitchen items
  4. True
  5. False
  6. not needed
  7. reddish
  8. the turmeric paper
  9. tamarind water
  10. we change it
  11. False
  12. the colour we see
  13. False
  14. a balloon
  15. sugar water
  16. False
  17. stays yellow
  18. False
  19. plain water
  20. True
  21. a mirror
  22. a comb
  23. vinegar
  24. turns reddish-brown
  25. detergent water
  26. tamarind water
  27. turmeric powder
  28. a dropper or spoon
  29. we keep it the same
  30. the liquid we test
  31. needed
  32. we keep it the same
  33. False
  34. detergent water
  35. not needed
  36. False
  37. False
  38. False
  39. needed
  40. False

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