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Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 673 · 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.

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

Answer key

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

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