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Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 342 · 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.🧺 Do we need a dropper or spoon for the turmeric test? (a) needed (b) not needed
  2. 2.🫧 Is detergent water an acid, a base or neutral? (a) an acid (b) neutral (c) a base
  3. 3.True or false: plain water turns turmeric reddish-brown. (a) True (b) False
  4. 4.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the turmeric paper (b) the light we look in (c) the colour we see (d) the liquid we test
  5. 5.True or false: salt water is neutral. (a) False (b) True
  6. 6.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) lemon juice (c) soap solution (d) a balloon
  7. 7.🫧 Which of these is an acid? (a) lemon juice (b) plain water (c) soap solution (d) baking soda water
  8. 8.🟡 Which of these turns turmeric reddish-brown? (a) vinegar (b) sugar water (c) lemon juice (d) detergent water
  9. 9.True or false: lemon juice is not needed for the turmeric test. (a) True (b) False
  10. 10.🫧 Which of these is an acid? (a) baking soda water (b) plain water (c) orange juice (d) salt water
  11. 11.True or false: tamarind water keeps turmeric yellow. (a) False (b) True
  12. 12.🧺 Do we need a balloon for the turmeric test? (a) not needed (b) needed
  13. 13.🍋 A reddish turmeric spot gets a few drops of lemon juice. What happens? (a) it turns darker red (b) it turns yellow again (c) it disappears (d) it turns blue
  14. 14.🫧 Is orange juice an acid, a base or neutral? (a) neutral (b) an acid (c) a base
  15. 15.🛟 Which rule keeps the turmeric test safe? (a) use only kitchen items (b) mix bathroom cleaners (c) sip each liquid (d) sniff each bottle hard
  16. 16.True or false: soap solution keeps turmeric yellow. (a) True (b) False
  17. 17.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) turmeric powder (c) yeast (d) water
  18. 18.🫧 Which of these is an acid? (a) soap solution (b) detergent water (c) baking soda water (d) curd
  19. 19.🟡 Which of these turns turmeric paper reddish-brown? (a) lemon juice (b) soap solution (c) sugar water (d) vinegar
  20. 20.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns black (b) it stays yellow (c) it turns red (d) it turns blue
  21. 21.⚖️ 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
  22. 22.🧺 Which of these is not needed for the turmeric test? (a) lemon juice (b) a dropper or spoon (c) soap solution (d) a magnet
  23. 23.🫧 Is sugar water an acid, a base or neutral? (a) a base (b) an acid (c) neutral
  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 change it (c) we keep it the same
  25. 25.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is what we measure. (a) False (b) True
  26. 26.🫧 Is curd an acid, a base or neutral? (a) neutral (b) an acid (c) a base
  27. 27.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) a battery cell (c) lemon juice (d) soap solution
  28. 28.True or false: salt water turns turmeric reddish-brown. (a) False (b) True
  29. 29.True or false: turmeric powder is not needed for the turmeric test. (a) False (b) True
  30. 30.🔍 Which is the odd one out? (a) tamarind water (b) lemon juice (c) soap solution (d) sugar water
  31. 31.True or false: sugar water is a base. (a) False (b) True
  32. 32.True or false: lemon juice turns turmeric reddish-brown. (a) True (b) False
  33. 33.⚖️ 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
  34. 34.🔍 Which is the odd one out? (a) detergent water (b) tamarind water (c) sugar water (d) salt water
  35. 35.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the light we look in is kept the same. (a) False (b) True
  36. 36.🟡 Turmeric paper meets vinegar. What happens? (a) turns reddish-brown (b) stays yellow
  37. 37.🛟 Turmeric stains clothes. What should you wear? (a) your school uniform (b) an old shirt or apron (c) a white party dress (d) your best clothes
  38. 38.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is what we measure. (a) True (b) False
  39. 39.True or false: a balloon is needed for the turmeric test. (a) True (b) False
  40. 40.⚖️ 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

Answer key

  1. needed
  2. a base
  3. False
  4. the colour we see
  5. True
  6. a balloon
  7. lemon juice
  8. detergent water
  9. False
  10. orange juice
  11. True
  12. not needed
  13. it turns yellow again
  14. an acid
  15. use only kitchen items
  16. False
  17. yeast
  18. curd
  19. soap solution
  20. it stays yellow
  21. we keep it the same
  22. a magnet
  23. neutral
  24. we keep it the same
  25. False
  26. an acid
  27. a battery cell
  28. False
  29. False
  30. soap solution
  31. False
  32. False
  33. we change it
  34. detergent water
  35. True
  36. stays yellow
  37. an old shirt or apron
  38. False
  39. False
  40. False

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