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Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 106 · 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 is the odd one out? (a) soap solution (b) tamarind water (c) lemon juice (d) salt water
  2. 2.🧺 Do we need a comb for the turmeric test? (a) needed (b) not needed
  3. 3.True or false: salt water keeps turmeric yellow. (a) False (b) True
  4. 4.🧺 Which of these is needed for the turmeric test? (a) a mirror (b) a comb (c) yeast (d) water
  5. 5.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is what we measure. (a) False (b) True
  6. 6.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the liquid we test (b) the turmeric paper (c) the number of drops (d) the colour we see
  7. 7.🫧 Is sugar water an acid, a base or neutral? (a) neutral (b) a base (c) an acid
  8. 8.🧺 Which of these is not needed for the turmeric test? (a) turmeric powder (b) a battery cell (c) soap solution (d) water
  9. 9.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it turns blue (b) it turns green (c) it stays yellow (d) reddish-brown
  10. 10.True or false: soap solution turns turmeric reddish-brown. (a) True (b) False
  11. 11.🟡 Which of these turns turmeric paper reddish-brown? (a) lemon juice (b) vinegar (c) sugar water (d) soap solution
  12. 12.🧺 Do we need a mirror for the turmeric test? (a) needed (b) not needed
  13. 13.🫧 Is tamarind water an acid, a base or neutral? (a) an acid (b) neutral (c) a base
  14. 14.🧺 Which of these is needed for the turmeric test? (a) yeast (b) a comb (c) a mirror (d) turmeric powder
  15. 15.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) white paper strips (b) a magnet (c) a dropper or spoon (d) turmeric powder
  16. 16.🟡 Turmeric paper meets baking soda water. What happens? (a) turns reddish-brown (b) stays yellow
  17. 17.True or false: turmeric powder is needed for the turmeric test. (a) True (b) False
  18. 18.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it stays yellow (b) it turns blue (c) it turns red (d) it turns black
  19. 19.🫧 Which of these is a base? (a) lemon juice (b) vinegar (c) baking soda water (d) plain water
  20. 20.True or false: a magnet is needed for the turmeric test. (a) True (b) False
  21. 21.⚖️ 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
  22. 22.True or false: lemon juice keeps turmeric yellow. (a) False (b) True
  23. 23.🧺 Which of these is not needed for the turmeric test? (a) soap solution (b) turmeric powder (c) a balloon (d) white paper strips
  24. 24.🟡 Which of these keeps turmeric yellow? (a) soap solution (b) detergent water (c) plain water (d) baking soda water
  25. 25.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the light we look in (b) the number of drops (c) the colour we see (d) the liquid we test
  26. 26.🧺 Which of these is not needed for the turmeric test? (a) soap solution (b) a magnet (c) lemon juice (d) a dropper or spoon
  27. 27.🟡 Which of these turns turmeric reddish-brown? (a) plain water (b) lemon juice (c) detergent water (d) vinegar
  28. 28.True or false: baking soda water is a base. (a) True (b) False
  29. 29.🔍 Which is the odd one out? (a) salt water (b) soap solution (c) baking soda water (d) detergent water
  30. 30.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a dropper or spoon (b) a mirror (c) water (d) turmeric powder
  31. 31.True or false: baking soda water keeps turmeric yellow. (a) True (b) False
  32. 32.🧺 Do we need a battery cell for the turmeric test? (a) not needed (b) needed
  33. 33.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the number of drops”? (a) we change it (b) we keep it the same (c) we measure it
  34. 34.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is the one thing we change. (a) True (b) False
  35. 35.🧺 Do we need turmeric powder for the turmeric test? (a) needed (b) not needed
  36. 36.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) a comb (c) turmeric powder (d) white paper strips
  37. 37.🟡 Which of these keeps turmeric yellow? (a) soap solution (b) detergent water (c) salt water (d) baking soda water
  38. 38.🛟 Turmeric stains clothes. What should you wear? (a) a white party dress (b) an old shirt or apron (c) your school uniform (d) your best clothes
  39. 39.🧺 Do we need lemon juice for the turmeric test? (a) not needed (b) needed
  40. 40.🛟 Which rule keeps the turmeric test safe? (a) sniff each bottle hard (b) use only kitchen items (c) mix bathroom cleaners (d) sip each liquid

Answer key

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

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