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Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 658 · 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 needed for the turmeric test? (a) a balloon (b) a battery cell (c) white paper strips (d) a comb
  2. 2.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a balloon (b) soap solution (c) white paper strips (d) turmeric powder
  3. 3.🟡 Which of these keeps turmeric yellow? (a) baking soda water (b) detergent water (c) salt water (d) soap solution
  4. 4.⚖️ 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 measure it (c) we change it
  5. 5.🧺 Do we need a battery cell for the turmeric test? (a) needed (b) not needed
  6. 6.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) bright blue (b) green (c) reddish (d) white at once
  7. 7.True or false: orange juice is a base. (a) False (b) True
  8. 8.True or false: a balloon is not needed for the turmeric test. (a) True (b) False
  9. 9.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the turmeric paper (b) the number of drops (c) the colour we see (d) the liquid we test
  10. 10.True or false: turmeric powder is not needed for the turmeric test. (a) True (b) False
  11. 11.🫧 Which of these is an acid? (a) soap solution (b) curd (c) salt water (d) plain water
  12. 12.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the liquid we test (b) the number of drops (c) the colour we see (d) the light we look in
  13. 13.🟡 Turmeric paper meets baking soda water. What happens? (a) stays yellow (b) turns reddish-brown
  14. 14.🟡 Why does soap solution change turmeric’s colour? (a) soap is an acid (b) soap is hot (c) soap is magnetic (d) soap water is a base
  15. 15.🧺 Do we need soap solution for the turmeric test? (a) needed (b) not needed
  16. 16.True or false: salt water turns turmeric reddish-brown. (a) False (b) True
  17. 17.True or false: yeast is needed for the turmeric test. (a) False (b) True
  18. 18.🫧 Which of these is a base? (a) sugar water (b) curd (c) plain water (d) baking soda water
  19. 19.🟡 Turmeric paper meets soap solution. What happens? (a) stays yellow (b) turns reddish-brown
  20. 20.🧺 Which of these is not needed for the turmeric test? (a) turmeric powder (b) lemon juice (c) a dropper or spoon (d) yeast
  21. 21.🟡 Turmeric paper meets sugar water. What happens? (a) turns reddish-brown (b) stays yellow
  22. 22.True or false: salt water keeps turmeric yellow. (a) True (b) False
  23. 23.🧺 Do we need a mirror for the turmeric test? (a) not needed (b) needed
  24. 24.🔍 Which is the odd one out? (a) baking soda water (b) soap solution (c) detergent water (d) tamarind water
  25. 25.🫧 Which of these is neutral? (a) lemon juice (b) salt water (c) orange juice (d) baking soda water
  26. 26.🛟 Which rule keeps the turmeric test safe? (a) sniff each bottle hard (b) sip each liquid (c) use only kitchen items (d) mix bathroom cleaners
  27. 27.🧺 Do we need a magnet for the turmeric test? (a) not needed (b) needed
  28. 28.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is the one thing we change. (a) False (b) True
  29. 29.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a dropper or spoon (b) a mirror (c) water (d) white paper strips
  30. 30.🟡 Which of these turns turmeric paper reddish-brown? (a) lemon juice (b) soap solution (c) sugar water (d) vinegar
  31. 31.True or false: soap solution keeps turmeric yellow. (a) True (b) False
  32. 32.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) reddish-brown (b) bright blue (c) it stays white (d) green
  33. 33.🔍 Which is the odd one out? (a) baking soda water (b) lemon juice (c) plain water (d) vinegar
  34. 34.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is the one thing we change. (a) False (b) True
  35. 35.🟡 Turmeric paper meets salt water. What happens? (a) turns reddish-brown (b) stays yellow
  36. 36.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) reddish-brown (b) it stays yellow (c) it turns green (d) it turns blue
  37. 37.🫧 Is plain water an acid, a base or neutral? (a) an acid (b) a base (c) neutral
  38. 38.🔍 Which is the odd one out? (a) soap solution (b) detergent water (c) baking soda water (d) lemon juice
  39. 39.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the liquid we test”? (a) we keep it the same (b) we measure it (c) we change it
  40. 40.🧺 Do we need water for the turmeric test? (a) not needed (b) needed

Answer key

  1. white paper strips
  2. a balloon
  3. salt water
  4. we keep it the same
  5. not needed
  6. reddish
  7. False
  8. True
  9. the liquid we test
  10. False
  11. curd
  12. the colour we see
  13. turns reddish-brown
  14. soap water is a base
  15. needed
  16. False
  17. False
  18. baking soda water
  19. turns reddish-brown
  20. yeast
  21. stays yellow
  22. True
  23. not needed
  24. tamarind water
  25. salt water
  26. use only kitchen items
  27. not needed
  28. False
  29. a mirror
  30. soap solution
  31. False
  32. reddish-brown
  33. baking soda water
  34. True
  35. stays yellow
  36. reddish-brown
  37. neutral
  38. lemon juice
  39. we change it
  40. needed

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