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Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 825 · 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.🍋 A drop of lemon juice falls on turmeric paper. What happens? (a) it turns red (b) it turns black (c) it stays yellow (d) it turns blue
  2. 2.🛟 Which rule keeps the turmeric test safe? (a) use only kitchen items (b) sniff each bottle hard (c) sip each liquid (d) mix bathroom cleaners
  3. 3.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the colour we see (b) the number of drops (c) the turmeric paper (d) the liquid we test
  4. 4.True or false: lemon juice keeps turmeric yellow. (a) True (b) False
  5. 5.🟡 Which of these turns turmeric reddish-brown? (a) sugar water (b) tamarind water (c) soap solution (d) plain water
  6. 6.🟡 Turmeric paper meets baking soda water. What happens? (a) stays yellow (b) turns reddish-brown
  7. 7.🧺 Do we need yeast for the turmeric test? (a) not needed (b) needed
  8. 8.🟡 Which of these turns turmeric reddish-brown? (a) detergent water (b) salt water (c) tamarind water (d) vinegar
  9. 9.🟡 Turmeric paper meets tamarind water. What happens? (a) stays yellow (b) turns reddish-brown
  10. 10.🫧 Is sugar water an acid, a base or neutral? (a) neutral (b) a base (c) an acid
  11. 11.True or false: vinegar is an acid. (a) True (b) False
  12. 12.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) white paper strips (b) a dropper or spoon (c) a magnet (d) soap solution
  13. 13.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a balloon (b) white paper strips (c) turmeric powder (d) water
  14. 14.True or false: salt water is neutral. (a) False (b) True
  15. 15.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is what we measure. (a) False (b) True
  16. 16.🧺 Do we need lemon juice for the turmeric test? (a) needed (b) not needed
  17. 17.🫧 Is orange juice an acid, a base or neutral? (a) an acid (b) a base (c) neutral
  18. 18.🔍 Which is the odd one out? (a) soap solution (b) baking soda water (c) detergent water (d) plain water
  19. 19.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) yeast (c) turmeric powder (d) lemon juice
  20. 20.🔍 Which is the odd one out? (a) tamarind water (b) lemon juice (c) detergent water (d) salt water
  21. 21.🫧 Which of these is an acid? (a) detergent water (b) soap solution (c) plain water (d) curd
  22. 22.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) a mirror (c) water (d) soap solution
  23. 23.True or false: plain water is a base. (a) False (b) True
  24. 24.True or false: baking soda water turns turmeric reddish-brown. (a) False (b) True
  25. 25.🟡 Turmeric paper meets plain water. What happens? (a) stays yellow (b) turns reddish-brown
  26. 26.🧺 Which of these is not needed for the turmeric test? (a) turmeric powder (b) a dropper or spoon (c) a magnet (d) soap solution
  27. 27.🧺 Which of these is not needed for the turmeric test? (a) a dropper or spoon (b) lemon juice (c) white paper strips (d) yeast
  28. 28.🧺 Which of these is not needed for the turmeric test? (a) soap solution (b) a dropper or spoon (c) a comb (d) water
  29. 29.🧺 Do we need white paper strips for the turmeric test? (a) not needed (b) needed
  30. 30.True or false: a balloon is not needed for the turmeric test. (a) True (b) False
  31. 31.🟡 Turmeric paper meets lemon juice. What happens? (a) turns reddish-brown (b) stays yellow
  32. 32.🧺 Which of these is needed for the turmeric test? (a) water (b) a mirror (c) a magnet (d) yeast
  33. 33.True or false: soap solution turns turmeric reddish-brown. (a) False (b) True
  34. 34.🧺 Which of these is needed for the turmeric test? (a) yeast (b) a battery cell (c) a balloon (d) turmeric powder
  35. 35.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the number of drops (b) the colour we see (c) the turmeric paper (d) the liquid we test
  36. 36.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) green (b) it stays white (c) reddish-brown (d) bright blue
  37. 37.🧺 Do we need a battery cell for the turmeric test? (a) needed (b) not needed
  38. 38.🟡 Which of these keeps turmeric yellow? (a) baking soda water (b) soap solution (c) sugar water (d) detergent water
  39. 39.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the liquid we test (b) the turmeric paper (c) the colour we see
  40. 40.🧺 Do we need turmeric powder for the turmeric test? (a) needed (b) not needed

Answer key

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

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