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Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 872 · 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) plain water (b) detergent water (c) vinegar (d) sugar water
  2. 2.🟡 Which of these keeps turmeric yellow? (a) soap solution (b) vinegar (c) baking soda water (d) detergent water
  3. 3.🧺 Which of these is not needed for the turmeric test? (a) a magnet (b) water (c) soap solution (d) a dropper or spoon
  4. 4.🟡 Turmeric paper meets plain water. What happens? (a) stays yellow (b) turns reddish-brown
  5. 5.True or false: baking soda water is an acid. (a) True (b) False
  6. 6.🧺 Which of these is not needed for the turmeric test? (a) white paper strips (b) a dropper or spoon (c) water (d) yeast
  7. 7.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) reddish-brown (b) it turns blue (c) it stays yellow (d) it turns green
  8. 8.True or false: lemon juice turns turmeric reddish-brown. (a) False (b) True
  9. 9.🟡 Turmeric paper meets salt water. What happens? (a) stays yellow (b) turns reddish-brown
  10. 10.⚖️ 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
  11. 11.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is what we measure. (a) True (b) False
  12. 12.True or false: a magnet is not needed for the turmeric test. (a) True (b) False
  13. 13.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the colour we see”? (a) we measure it (b) we keep it the same (c) we change it
  14. 14.True or false: a dropper or spoon is not needed for the turmeric test. (a) False (b) True
  15. 15.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the turmeric paper (b) the colour we see (c) the number of drops (d) the light we look in
  16. 16.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is kept the same. (a) True (b) False
  17. 17.True or false: vinegar is neutral. (a) True (b) False
  18. 18.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is what we measure. (a) False (b) True
  19. 19.True or false: a mirror is not needed for the turmeric test. (a) True (b) False
  20. 20.🟡 Which of these turns turmeric reddish-brown? (a) detergent water (b) tamarind water (c) lemon juice (d) sugar water
  21. 21.🫧 Which of these is neutral? (a) lemon juice (b) baking soda water (c) tamarind water (d) salt water
  22. 22.🟡 Which of these turns turmeric paper reddish-brown? (a) soap solution (b) sugar water (c) lemon juice (d) vinegar
  23. 23.🟡 Turmeric paper meets tamarind water. What happens? (a) stays yellow (b) turns reddish-brown
  24. 24.🫧 Which of these is an acid? (a) vinegar (b) detergent water (c) sugar water (d) salt water
  25. 25.🟡 Which of these turns turmeric reddish-brown? (a) salt water (b) vinegar (c) soap solution (d) plain water
  26. 26.True or false: a battery cell is not needed for the turmeric test. (a) True (b) False
  27. 27.True or false: vinegar is a base. (a) False (b) True
  28. 28.True or false: soap solution is needed for the turmeric test. (a) False (b) True
  29. 29.True or false: detergent water is neutral. (a) False (b) True
  30. 30.🧺 Which of these is needed for the turmeric test? (a) a magnet (b) water (c) a mirror (d) a battery cell
  31. 31.🛟 Which rule keeps the turmeric test safe? (a) sniff each bottle hard (b) use only kitchen items (c) sip each liquid (d) mix bathroom cleaners
  32. 32.True or false: turmeric powder is needed for the turmeric test. (a) True (b) False
  33. 33.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is kept the same. (a) True (b) False
  34. 34.🫧 Is soap solution an acid, a base or neutral? (a) neutral (b) a base (c) an acid
  35. 35.🧺 Do we need yeast for the turmeric test? (a) not needed (b) needed
  36. 36.🧺 Which of these is needed for the turmeric test? (a) a mirror (b) a magnet (c) yeast (d) lemon juice
  37. 37.🟡 Turmeric paper meets detergent water. What happens? (a) stays yellow (b) turns reddish-brown
  38. 38.🧺 Which of these is needed for the turmeric test? (a) turmeric powder (b) a balloon (c) a magnet (d) a comb
  39. 39.🧺 Which of these is needed for the turmeric test? (a) a battery cell (b) a comb (c) a balloon (d) soap solution
  40. 40.🔍 Which is the odd one out? (a) baking soda water (b) plain water (c) vinegar (d) lemon juice

Answer key

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

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