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Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 444 · 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.True or false: turmeric powder is not needed for the turmeric test. (a) False (b) True
  2. 2.🫧 Is salt water an acid, a base or neutral? (a) an acid (b) a base (c) neutral
  3. 3.🧺 Do we need yeast for the turmeric test? (a) not needed (b) needed
  4. 4.🫧 Is baking soda water an acid, a base or neutral? (a) neutral (b) an acid (c) a base
  5. 5.🧺 Which of these is needed for the turmeric test? (a) a battery cell (b) a magnet (c) soap solution (d) a comb
  6. 6.🔍 Which is the odd one out? (a) lemon juice (b) baking soda water (c) salt water (d) plain water
  7. 7.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a dropper or spoon (b) a magnet (c) water (d) soap solution
  8. 8.🔍 Which is the odd one out? (a) detergent water (b) plain water (c) soap solution (d) baking soda water
  9. 9.True or false: a comb is not needed for the turmeric test. (a) True (b) False
  10. 10.🍋 A reddish turmeric spot gets a few drops of lemon juice. What happens? (a) it turns yellow again (b) it disappears (c) it turns darker red (d) it turns blue
  11. 11.🫧 Is soap solution an acid, a base or neutral? (a) a base (b) neutral (c) an acid
  12. 12.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) reddish-brown (b) it stays white (c) green (d) bright blue
  13. 13.🫧 Which of these is an acid? (a) plain water (b) tamarind water (c) soap solution (d) salt water
  14. 14.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is the one thing we change. (a) True (b) False
  15. 15.True or false: vinegar is an acid. (a) False (b) True
  16. 16.🧺 Which of these is not needed for the turmeric test? (a) a dropper or spoon (b) water (c) turmeric powder (d) yeast
  17. 17.🫧 Which of these is a base? (a) detergent water (b) lemon juice (c) orange juice (d) sugar water
  18. 18.True or false: a battery cell is needed for the turmeric test. (a) True (b) False
  19. 19.🧺 Which of these is not needed for the turmeric test? (a) turmeric powder (b) water (c) a balloon (d) lemon juice
  20. 20.🔍 Which is the odd one out? (a) soap solution (b) baking soda water (c) detergent water (d) vinegar
  21. 21.True or false: baking soda water is neutral. (a) False (b) True
  22. 22.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is what we measure. (a) True (b) False
  23. 23.⚖️ 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 turmeric paper (c) the colour we see (d) the number of drops
  24. 24.🧺 Which of these is needed for the turmeric test? (a) a balloon (b) turmeric powder (c) a magnet (d) a mirror
  25. 25.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the light we look in”? (a) we measure it (b) we keep it the same (c) we change it
  26. 26.🛟 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
  27. 27.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the liquid we test”? (a) we keep it the same (b) we change it (c) we measure it
  28. 28.🟡 Which of these turns turmeric reddish-brown? (a) baking soda water (b) lemon juice (c) sugar water (d) plain water
  29. 29.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the light we look in is what we measure. (a) False (b) True
  30. 30.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the liquid we test (b) the colour we see (c) the light we look in (d) the number of drops
  31. 31.🫧 Is sugar water an acid, a base or neutral? (a) a base (b) neutral (c) an acid
  32. 32.True or false: baking soda water turns turmeric reddish-brown. (a) False (b) True
  33. 33.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) reddish-brown (b) it turns blue (c) it turns green (d) it stays yellow
  34. 34.True or false: lemon juice turns turmeric reddish-brown. (a) False (b) True
  35. 35.🟡 Which of these keeps turmeric yellow? (a) baking soda water (b) lemon juice (c) soap solution (d) detergent water
  36. 36.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) water (c) a balloon (d) soap solution
  37. 37.🫧 Is orange juice an acid, a base or neutral? (a) neutral (b) a base (c) an acid
  38. 38.True or false: salt water turns turmeric reddish-brown. (a) False (b) True
  39. 39.True or false: tamarind water keeps turmeric yellow. (a) True (b) False
  40. 40.🫧 Which of these is an acid? (a) plain water (b) vinegar (c) salt water (d) soap solution

Answer key

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

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