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Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 151 · 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) yeast (b) soap solution (c) a balloon (d) a magnet
  2. 2.🔍 Which is the odd one out? (a) soap solution (b) sugar water (c) detergent water (d) baking soda water
  3. 3.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the light we look in is the one thing we change. (a) False (b) True
  4. 4.🧺 Which of these is not needed for the turmeric test? (a) a dropper or spoon (b) soap solution (c) yeast (d) lemon juice
  5. 5.🛟 Turmeric stains clothes. What should you wear? (a) your best clothes (b) your school uniform (c) a white party dress (d) an old shirt or apron
  6. 6.🧺 Do we need a comb for the turmeric test? (a) needed (b) not needed
  7. 7.🟡 Turmeric paper meets salt water. What happens? (a) turns reddish-brown (b) stays yellow
  8. 8.🍋 A reddish turmeric spot gets a few drops of lemon juice. What happens? (a) it turns blue (b) it turns darker red (c) it disappears (d) it turns yellow again
  9. 9.🛟 Which rule keeps the turmeric test safe? (a) use only kitchen items (b) sniff each bottle hard (c) sip each liquid (d) mix bathroom cleaners
  10. 10.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the liquid we test (b) the colour we see (c) the turmeric paper (d) the light we look in
  11. 11.True or false: turmeric powder is needed for the turmeric test. (a) False (b) True
  12. 12.True or false: water is not needed for the turmeric test. (a) True (b) False
  13. 13.🫧 Is lemon juice an acid, a base or neutral? (a) neutral (b) a base (c) an acid
  14. 14.🧺 Do we need soap solution for the turmeric test? (a) needed (b) not needed
  15. 15.True or false: vinegar is an acid. (a) False (b) True
  16. 16.True or false: sugar water is neutral. (a) True (b) False
  17. 17.🔍 Which is the odd one out? (a) sugar water (b) tamarind water (c) vinegar (d) detergent water
  18. 18.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is kept the same. (a) True (b) False
  19. 19.True or false: vinegar turns turmeric reddish-brown. (a) True (b) False
  20. 20.True or false: sugar water keeps turmeric yellow. (a) False (b) True
  21. 21.🧺 Do we need a battery cell for the turmeric test? (a) needed (b) not needed
  22. 22.🔍 Which is the odd one out? (a) vinegar (b) salt water (c) baking soda water (d) sugar water
  23. 23.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) green (b) white at once (c) bright blue (d) reddish
  24. 24.True or false: detergent water is an acid. (a) False (b) True
  25. 25.🫧 Which of these is neutral? (a) plain water (b) orange juice (c) lemon juice (d) baking soda water
  26. 26.🧺 Which of these is not needed for the turmeric test? (a) soap solution (b) water (c) a mirror (d) lemon juice
  27. 27.🧺 Which of these is needed for the turmeric test? (a) a mirror (b) white paper strips (c) a magnet (d) a balloon
  28. 28.🔍 Which is the odd one out? (a) baking soda water (b) soap solution (c) plain water (d) detergent water
  29. 29.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a mirror (b) white paper strips (c) soap solution (d) water
  30. 30.True or false: orange juice is an acid. (a) False (b) True
  31. 31.🟡 Which of these turns turmeric reddish-brown? (a) vinegar (b) tamarind water (c) plain water (d) detergent water
  32. 32.🧺 Do we need yeast for the turmeric test? (a) needed (b) not needed
  33. 33.True or false: lemon juice turns turmeric reddish-brown. (a) True (b) False
  34. 34.⚖️ 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
  35. 35.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the colour we see”? (a) we measure it (b) we change it (c) we keep it the same
  36. 36.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is kept the same. (a) False (b) True
  37. 37.True or false: soap solution keeps turmeric yellow. (a) False (b) True
  38. 38.🫧 Is sugar water an acid, a base or neutral? (a) a base (b) an acid (c) neutral
  39. 39.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a comb (b) turmeric powder (c) water (d) white paper strips
  40. 40.True or false: lemon juice is not needed for the turmeric test. (a) True (b) False

Answer key

  1. soap solution
  2. sugar water
  3. False
  4. yeast
  5. an old shirt or apron
  6. not needed
  7. stays yellow
  8. it turns yellow again
  9. use only kitchen items
  10. the liquid we test
  11. True
  12. False
  13. an acid
  14. needed
  15. True
  16. True
  17. detergent water
  18. False
  19. False
  20. True
  21. not needed
  22. baking soda water
  23. reddish
  24. False
  25. plain water
  26. a mirror
  27. white paper strips
  28. plain water
  29. a mirror
  30. True
  31. detergent water
  32. not needed
  33. False
  34. we change it
  35. we measure it
  36. True
  37. False
  38. neutral
  39. a comb
  40. False

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