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Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 741 · 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.🟡 Turmeric paper meets baking soda water. What happens? (a) stays yellow (b) turns reddish-brown
  2. 2.🧺 Do we need turmeric powder for the turmeric test? (a) needed (b) not needed
  3. 3.🧺 Do we need soap solution for the turmeric test? (a) needed (b) not needed
  4. 4.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) a balloon (c) turmeric powder (d) white paper strips
  5. 5.🟡 Which of these keeps turmeric yellow? (a) detergent water (b) baking soda water (c) sugar water (d) soap solution
  6. 6.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the light we look in”? (a) we keep it the same (b) we change it (c) we measure it
  7. 7.🧺 Which of these is needed for the turmeric test? (a) a balloon (b) yeast (c) turmeric powder (d) a magnet
  8. 8.🟡 Turmeric paper meets vinegar. What happens? (a) turns reddish-brown (b) stays yellow
  9. 9.🟡 Turmeric paper meets soap solution. What happens? (a) stays yellow (b) turns reddish-brown
  10. 10.🟡 Which of these turns turmeric reddish-brown? (a) tamarind water (b) plain water (c) baking soda water (d) lemon juice
  11. 11.🟡 Which of these keeps turmeric yellow? (a) detergent water (b) tamarind water (c) soap solution (d) baking soda water
  12. 12.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a battery cell (b) turmeric powder (c) soap solution (d) water
  13. 13.🔍 Which is the odd one out? (a) plain water (b) tamarind water (c) lemon juice (d) soap solution
  14. 14.🔍 Which is the odd one out? (a) sugar water (b) lemon juice (c) tamarind water (d) baking soda water
  15. 15.⚖️ 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 colour we see (c) the turmeric paper (d) the number of drops
  16. 16.True or false: soap solution is an acid. (a) False (b) True
  17. 17.True or false: soap solution is not needed for the turmeric test. (a) True (b) False
  18. 18.🟡 Turmeric paper meets plain water. What happens? (a) stays yellow (b) turns reddish-brown
  19. 19.🫧 Which of these is an acid? (a) detergent water (b) plain water (c) baking soda water (d) curd
  20. 20.True or false: soap solution is needed for the turmeric test. (a) True (b) False
  21. 21.🛟 Which rule keeps the turmeric test safe? (a) use only kitchen items (b) sip each liquid (c) mix bathroom cleaners (d) sniff each bottle hard
  22. 22.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) white at once (b) bright blue (c) green (d) reddish
  23. 23.🟡 Turmeric paper meets salt water. What happens? (a) stays yellow (b) turns reddish-brown
  24. 24.True or false: lemon juice turns turmeric reddish-brown. (a) True (b) False
  25. 25.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a dropper or spoon (b) yeast (c) soap solution (d) water
  26. 26.True or false: detergent water turns turmeric reddish-brown. (a) False (b) True
  27. 27.True or false: tamarind water is a base. (a) True (b) False
  28. 28.🧺 Do we need yeast for the turmeric test? (a) needed (b) not needed
  29. 29.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a mirror (b) a dropper or spoon (c) lemon juice (d) turmeric powder
  30. 30.True or false: white paper strips is not needed for the turmeric test. (a) False (b) True
  31. 31.⚖️ 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
  32. 32.🧺 Do we need a dropper or spoon for the turmeric test? (a) needed (b) not needed
  33. 33.True or false: lemon juice is not needed for the turmeric test. (a) False (b) True
  34. 34.🟡 Why does soap solution change turmeric’s colour? (a) soap water is a base (b) soap is an acid (c) soap is magnetic (d) soap is hot
  35. 35.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) reddish-brown (b) bright blue (c) green (d) it stays white
  36. 36.🟡 Turmeric paper meets lemon juice. What happens? (a) stays yellow (b) turns reddish-brown
  37. 37.🫧 Is tamarind water an acid, a base or neutral? (a) an acid (b) a base (c) neutral
  38. 38.True or false: turmeric powder is not needed for the turmeric test. (a) True (b) False
  39. 39.🫧 Is detergent water an acid, a base or neutral? (a) an acid (b) a base (c) neutral
  40. 40.🧺 Which of these is not needed for the turmeric test? (a) lemon juice (b) soap solution (c) a battery cell (d) water

Answer key

  1. turns reddish-brown
  2. needed
  3. needed
  4. a balloon
  5. sugar water
  6. we keep it the same
  7. turmeric powder
  8. stays yellow
  9. turns reddish-brown
  10. baking soda water
  11. tamarind water
  12. a battery cell
  13. soap solution
  14. baking soda water
  15. the liquid we test
  16. False
  17. False
  18. stays yellow
  19. curd
  20. True
  21. use only kitchen items
  22. reddish
  23. stays yellow
  24. False
  25. yeast
  26. True
  27. False
  28. not needed
  29. a mirror
  30. False
  31. the light we look in
  32. needed
  33. False
  34. soap water is a base
  35. reddish-brown
  36. stays yellow
  37. an acid
  38. False
  39. a base
  40. a battery cell

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