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Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 358 · 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.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) soap solution (c) a mirror (d) turmeric powder
  2. 2.True or false: a magnet is needed for the turmeric test. (a) False (b) True
  3. 3.🧺 Do we need a dropper or spoon for the turmeric test? (a) not needed (b) needed
  4. 4.🧺 Do we need lemon juice for the turmeric test? (a) not needed (b) needed
  5. 5.🧺 Do we need a magnet for the turmeric test? (a) not needed (b) needed
  6. 6.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is the one thing we change. (a) False (b) True
  7. 7.🔍 Which is the odd one out? (a) vinegar (b) salt water (c) lemon juice (d) detergent water
  8. 8.🟡 Why does soap solution change turmeric’s colour? (a) soap water is a base (b) soap is hot (c) soap is an acid (d) soap is magnetic
  9. 9.True or false: baking soda water keeps turmeric yellow. (a) False (b) True
  10. 10.🟡 Turmeric paper meets baking soda water. What happens? (a) turns reddish-brown (b) stays yellow
  11. 11.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the number of drops”? (a) we change it (b) we keep it the same (c) we measure it
  12. 12.🔍 Which is the odd one out? (a) salt water (b) vinegar (c) soap solution (d) sugar water
  13. 13.True or false: detergent water keeps turmeric yellow. (a) True (b) False
  14. 14.🫧 Is tamarind water an acid, a base or neutral? (a) an acid (b) neutral (c) a base
  15. 15.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the light we look in”? (a) we change it (b) we keep it the same (c) we measure it
  16. 16.🟡 Turmeric paper meets salt water. What happens? (a) turns reddish-brown (b) stays yellow
  17. 17.🫧 Which of these is neutral? (a) orange juice (b) vinegar (c) lemon juice (d) plain water
  18. 18.🔍 Which is the odd one out? (a) soap solution (b) vinegar (c) baking soda water (d) detergent water
  19. 19.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) yeast (c) lemon juice (d) water
  20. 20.🧺 Which of these is not needed for the turmeric test? (a) a mirror (b) a dropper or spoon (c) turmeric powder (d) water
  21. 21.🛟 Which rule keeps the turmeric test safe? (a) sip each liquid (b) sniff each bottle hard (c) use only kitchen items (d) mix bathroom cleaners
  22. 22.True or false: yeast is needed for the turmeric test. (a) True (b) False
  23. 23.🧺 Do we need white paper strips for the turmeric test? (a) not needed (b) needed
  24. 24.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a magnet (b) lemon juice (c) a dropper or spoon (d) water
  25. 25.🫧 Which of these is a base? (a) sugar water (b) detergent water (c) orange juice (d) plain water
  26. 26.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the turmeric paper (b) the light we look in (c) the colour we see (d) the liquid we test
  27. 27.🧺 Which of these is needed for the turmeric test? (a) turmeric powder (b) a balloon (c) a mirror (d) a battery cell
  28. 28.🧺 Do we need soap solution for the turmeric test? (a) needed (b) not needed
  29. 29.True or false: sugar water turns turmeric reddish-brown. (a) True (b) False
  30. 30.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the liquid we test (b) the turmeric paper (c) the light we look in (d) the colour we see
  31. 31.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) a comb (c) water (d) soap solution
  32. 32.🧺 Do we need a battery cell for the turmeric test? (a) needed (b) not needed
  33. 33.🔍 Which is the odd one out? (a) baking soda water (b) detergent water (c) soap solution (d) plain water
  34. 34.🟡 Turmeric paper meets plain water. What happens? (a) turns reddish-brown (b) stays yellow
  35. 35.🫧 Is lemon juice an acid, a base or neutral? (a) an acid (b) a base (c) neutral
  36. 36.🔍 Which is the odd one out? (a) lemon juice (b) baking soda water (c) soap solution (d) detergent water
  37. 37.🫧 Is baking soda water an acid, a base or neutral? (a) an acid (b) neutral (c) a base
  38. 38.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns blue (b) it turns red (c) it stays yellow (d) it turns black
  39. 39.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) reddish-brown (b) it turns blue (c) it stays yellow (d) it turns green
  40. 40.True or false: plain water is a base. (a) True (b) False

Answer key

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

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