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Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 611 · 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.🟡 Turmeric paper meets plain water. What happens? (a) turns reddish-brown (b) stays yellow
  2. 2.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) bright blue (b) green (c) white at once (d) reddish
  3. 3.🍋 A reddish turmeric spot gets a few drops of lemon juice. What happens? (a) it disappears (b) it turns darker red (c) it turns blue (d) it turns yellow again
  4. 4.🟡 Which of these turns turmeric reddish-brown? (a) baking soda water (b) vinegar (c) salt water (d) plain water
  5. 5.🫧 Which of these is neutral? (a) lemon juice (b) detergent water (c) salt water (d) orange juice
  6. 6.🟡 Turmeric paper meets detergent 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 rule keeps the turmeric test safe? (a) sip each liquid (b) mix bathroom cleaners (c) sniff each bottle hard (d) use only kitchen items
  9. 9.🧺 Which of these is not needed for the turmeric test? (a) a dropper or spoon (b) water (c) lemon juice (d) a comb
  10. 10.True or false: a comb is not needed for the turmeric test. (a) False (b) True
  11. 11.🔍 Which is the odd one out? (a) vinegar (b) baking soda water (c) soap solution (d) detergent water
  12. 12.🟡 Which of these turns turmeric reddish-brown? (a) sugar water (b) lemon juice (c) plain water (d) detergent water
  13. 13.🟡 Turmeric paper meets vinegar. What happens? (a) stays yellow (b) turns reddish-brown
  14. 14.⚖️ 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 change it (c) we measure it
  15. 15.🛟 Turmeric stains clothes. What should you wear? (a) a white party dress (b) your school uniform (c) an old shirt or apron (d) your best clothes
  16. 16.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is what we measure. (a) False (b) True
  17. 17.🧺 Do we need a comb for the turmeric test? (a) not needed (b) needed
  18. 18.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the liquid we test”? (a) we measure it (b) we change it (c) we keep it the same
  19. 19.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) reddish-brown (b) it turns green (c) it stays yellow (d) it turns blue
  20. 20.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is kept the same. (a) False (b) True
  21. 21.🟡 Turmeric paper meets tamarind water. What happens? (a) stays yellow (b) turns reddish-brown
  22. 22.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns blue (b) it stays yellow (c) it turns red (d) it turns black
  23. 23.🫧 Which of these is neutral? (a) lemon juice (b) soap solution (c) detergent water (d) sugar water
  24. 24.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the number of drops”? (a) we measure it (b) we keep it the same (c) we change it
  25. 25.🫧 Which of these is a base? (a) lemon juice (b) soap solution (c) plain water (d) vinegar
  26. 26.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) a magnet (c) white paper strips (d) a dropper or spoon
  27. 27.True or false: a mirror is needed for the turmeric test. (a) False (b) True
  28. 28.🧺 Do we need turmeric powder for the turmeric test? (a) not needed (b) needed
  29. 29.🫧 Is tamarind water an acid, a base or neutral? (a) an acid (b) neutral (c) a base
  30. 30.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) water (c) a mirror (d) white paper strips
  31. 31.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the light we look in (b) the liquid we test (c) the colour we see
  32. 32.🫧 Is baking soda water an acid, a base or neutral? (a) an acid (b) a base (c) neutral
  33. 33.True or false: a battery cell is needed for the turmeric test. (a) False (b) True
  34. 34.True or false: baking soda water is neutral. (a) False (b) True
  35. 35.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is kept the same. (a) True (b) False
  36. 36.True or false: water is not needed for the turmeric test. (a) False (b) True
  37. 37.🔍 Which is the odd one out? (a) baking soda water (b) salt water (c) lemon juice (d) vinegar
  38. 38.True or false: lemon juice is needed for the turmeric test. (a) True (b) False
  39. 39.🫧 Which of these is a base? (a) vinegar (b) plain water (c) orange juice (d) detergent water
  40. 40.True or false: orange juice is an acid. (a) True (b) False

Answer key

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

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