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Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 194 · 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.🧺 Do we need lemon juice for the turmeric test? (a) not needed (b) needed
  2. 2.🟡 Which of these turns turmeric reddish-brown? (a) tamarind water (b) soap solution (c) sugar water (d) plain water
  3. 3.🧺 Do we need a balloon for the turmeric test? (a) not needed (b) needed
  4. 4.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) green (b) bright blue (c) reddish (d) white at once
  5. 5.🟡 Turmeric paper meets lemon juice. What happens? (a) stays yellow (b) turns reddish-brown
  6. 6.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the colour we see (b) the liquid we test (c) the light we look in
  7. 7.🫧 Which of these is a base? (a) sugar water (b) plain water (c) detergent water (d) vinegar
  8. 8.🟡 Turmeric paper meets baking soda water. What happens? (a) turns reddish-brown (b) stays yellow
  9. 9.🍋 A reddish turmeric spot gets a few drops of lemon juice. What happens? (a) it turns yellow again (b) it turns darker red (c) it disappears (d) it turns blue
  10. 10.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it turns blue (b) reddish-brown (c) it stays yellow (d) it turns green
  11. 11.🫧 Is baking soda water an acid, a base or neutral? (a) an acid (b) a base (c) neutral
  12. 12.🧺 Which of these is not needed for the turmeric test? (a) white paper strips (b) a mirror (c) turmeric powder (d) a dropper or spoon
  13. 13.🔍 Which is the odd one out? (a) detergent water (b) lemon juice (c) vinegar (d) sugar water
  14. 14.🟡 Which of these keeps turmeric yellow? (a) vinegar (b) soap solution (c) baking soda water (d) detergent water
  15. 15.🛟 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
  16. 16.True or false: vinegar is a base. (a) True (b) False
  17. 17.True or false: water is not needed for the turmeric test. (a) True (b) False
  18. 18.🛟 Turmeric stains clothes. What should you wear? (a) an old shirt or apron (b) your school uniform (c) your best clothes (d) a white party dress
  19. 19.🔍 Which is the odd one out? (a) soap solution (b) baking soda water (c) lemon juice (d) detergent water
  20. 20.⚖️ 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
  21. 21.🫧 Is salt water an acid, a base or neutral? (a) a base (b) an acid (c) neutral
  22. 22.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the number of drops (b) the liquid we test (c) the colour we see (d) the light we look in
  23. 23.🧺 Do we need a mirror for the turmeric test? (a) not needed (b) needed
  24. 24.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is the one thing we change. (a) False (b) True
  25. 25.🟡 Turmeric paper meets vinegar. What happens? (a) turns reddish-brown (b) stays yellow
  26. 26.🍋 A drop of lemon juice falls on turmeric paper. What happens? (a) it turns black (b) it stays yellow (c) it turns red (d) it turns blue
  27. 27.🧺 Which of these is needed for the turmeric test? (a) a balloon (b) a comb (c) a dropper or spoon (d) yeast
  28. 28.🧺 Which of these is needed for the turmeric test? (a) a magnet (b) a balloon (c) turmeric powder (d) a mirror
  29. 29.🔍 Which is the odd one out? (a) salt water (b) vinegar (c) lemon juice (d) baking soda water
  30. 30.True or false: curd is neutral. (a) True (b) False
  31. 31.🟡 Turmeric paper meets detergent water. What happens? (a) stays yellow (b) turns reddish-brown
  32. 32.🧺 Which of these is not needed for the turmeric test? (a) water (b) turmeric powder (c) white paper strips (d) yeast
  33. 33.🫧 Is vinegar an acid, a base or neutral? (a) neutral (b) an acid (c) a base
  34. 34.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is kept the same. (a) True (b) False
  35. 35.True or false: vinegar turns turmeric reddish-brown. (a) True (b) False
  36. 36.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the light we look in is kept the same. (a) True (b) False
  37. 37.🟡 Turmeric paper meets tamarind water. What happens? (a) stays yellow (b) turns reddish-brown
  38. 38.True or false: a dropper or spoon is needed for the turmeric test. (a) False (b) True
  39. 39.True or false: tamarind water is neutral. (a) False (b) True
  40. 40.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a balloon (b) soap solution (c) a dropper or spoon (d) water

Answer key

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

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