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Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 497 · 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 not needed for the turmeric test? (a) a balloon (b) turmeric powder (c) white paper strips (d) soap solution
  2. 2.True or false: a mirror is needed for the turmeric test. (a) True (b) False
  3. 3.🔍 Which is the odd one out? (a) soap solution (b) baking soda water (c) vinegar (d) detergent water
  4. 4.🫧 Is plain water an acid, a base or neutral? (a) an acid (b) neutral (c) a base
  5. 5.True or false: tamarind water is a base. (a) True (b) False
  6. 6.True or false: yeast is needed for the turmeric test. (a) False (b) True
  7. 7.⚖️ 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
  8. 8.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it stays yellow (b) it turns black (c) it turns blue (d) it turns red
  9. 9.🔍 Which is the odd one out? (a) soap solution (b) tamarind water (c) detergent water (d) baking soda water
  10. 10.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) reddish (b) bright blue (c) white at once (d) green
  11. 11.🍋 A reddish turmeric spot gets a few drops of lemon juice. What happens? (a) it turns darker red (b) it disappears (c) it turns blue (d) it turns yellow again
  12. 12.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it stays yellow (b) it turns green (c) reddish-brown (d) it turns blue
  13. 13.🫧 Which of these is a base? (a) curd (b) tamarind water (c) orange juice (d) detergent water
  14. 14.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the number of drops (b) the turmeric paper (c) the liquid we test (d) the light we look in
  15. 15.True or false: tamarind water is an acid. (a) False (b) True
  16. 16.True or false: tamarind water turns turmeric reddish-brown. (a) True (b) False
  17. 17.🧺 Which of these is not needed for the turmeric test? (a) turmeric powder (b) white paper strips (c) water (d) a comb
  18. 18.🧺 Do we need a dropper or spoon for the turmeric test? (a) not needed (b) needed
  19. 19.True or false: baking soda water keeps turmeric yellow. (a) True (b) False
  20. 20.🛟 Turmeric stains clothes. What should you wear? (a) a white party dress (b) your school uniform (c) your best clothes (d) an old shirt or apron
  21. 21.True or false: water is not needed for the turmeric test. (a) False (b) True
  22. 22.🔍 Which is the odd one out? (a) vinegar (b) tamarind water (c) salt water (d) baking soda water
  23. 23.True or false: baking soda water is neutral. (a) False (b) True
  24. 24.True or false: turmeric powder is not needed for the turmeric test. (a) False (b) True
  25. 25.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) white paper strips (c) a comb (d) lemon juice
  26. 26.🧺 Which of these is needed for the turmeric test? (a) yeast (b) soap solution (c) a magnet (d) a comb
  27. 27.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the turmeric paper”? (a) we change it (b) we measure it (c) we keep it the same
  28. 28.🟡 Turmeric paper meets tamarind water. What happens? (a) stays yellow (b) turns reddish-brown
  29. 29.True or false: detergent water keeps turmeric yellow. (a) True (b) False
  30. 30.🧺 Which of these is not needed for the turmeric test? (a) water (b) soap solution (c) yeast (d) a dropper or spoon
  31. 31.🧺 Which of these is not needed for the turmeric test? (a) a dropper or spoon (b) a magnet (c) water (d) white paper strips
  32. 32.⚖️ 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 measure it (c) we keep it the same
  33. 33.True or false: detergent water turns turmeric reddish-brown. (a) False (b) True
  34. 34.🔍 Which is the odd one out? (a) soap solution (b) detergent water (c) baking soda water (d) plain water
  35. 35.🫧 Is salt water an acid, a base or neutral? (a) neutral (b) a base (c) an acid
  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.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the turmeric paper (b) the liquid we test (c) the colour we see
  38. 38.🛟 Which rule keeps the turmeric test safe? (a) sniff each bottle hard (b) sip each liquid (c) mix bathroom cleaners (d) use only kitchen items
  39. 39.True or false: a balloon is needed for the turmeric test. (a) True (b) False
  40. 40.True or false: soap solution turns turmeric reddish-brown. (a) True (b) False

Answer key

  1. a balloon
  2. False
  3. vinegar
  4. neutral
  5. False
  6. False
  7. we change it
  8. it stays yellow
  9. tamarind water
  10. reddish
  11. it turns yellow again
  12. reddish-brown
  13. detergent water
  14. the liquid we test
  15. True
  16. False
  17. a comb
  18. needed
  19. False
  20. an old shirt or apron
  21. False
  22. baking soda water
  23. False
  24. False
  25. a comb
  26. soap solution
  27. we keep it the same
  28. stays yellow
  29. False
  30. yeast
  31. a magnet
  32. we keep it the same
  33. True
  34. plain water
  35. neutral
  36. True
  37. the turmeric paper
  38. use only kitchen items
  39. False
  40. True

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