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Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 413 · 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.🫧 Is vinegar an acid, a base or neutral? (a) an acid (b) a base (c) neutral
  2. 2.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) bright blue (b) green (c) it stays white (d) reddish-brown
  3. 3.True or false: soap solution is not needed for the turmeric test. (a) False (b) True
  4. 4.True or false: water is not needed for the turmeric test. (a) False (b) True
  5. 5.🫧 Is lemon juice an acid, a base or neutral? (a) neutral (b) an acid (c) a base
  6. 6.True or false: plain water turns turmeric reddish-brown. (a) False (b) True
  7. 7.🟡 Turmeric paper meets detergent water. What happens? (a) stays yellow (b) turns reddish-brown
  8. 8.🧺 Do we need a dropper or spoon for the turmeric test? (a) needed (b) not needed
  9. 9.🧺 Do we need a balloon for the turmeric test? (a) needed (b) not needed
  10. 10.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns black (b) it turns blue (c) it turns red (d) it stays yellow
  11. 11.🧺 Do we need a magnet for the turmeric test? (a) needed (b) not needed
  12. 12.🫧 Which of these is an acid? (a) salt water (b) soap solution (c) curd (d) detergent water
  13. 13.True or false: plain water is an acid. (a) False (b) True
  14. 14.⚖️ 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
  15. 15.True or false: yeast is needed for the turmeric test. (a) True (b) False
  16. 16.True or false: soap solution turns turmeric reddish-brown. (a) True (b) False
  17. 17.🧺 Do we need a battery cell for the turmeric test? (a) needed (b) not needed
  18. 18.True or false: a balloon is needed for the turmeric test. (a) False (b) True
  19. 19.🔍 Which is the odd one out? (a) sugar water (b) baking soda water (c) detergent water (d) soap solution
  20. 20.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) bright blue (b) white at once (c) green (d) reddish
  21. 21.🔍 Which is the odd one out? (a) baking soda water (b) soap solution (c) detergent water (d) vinegar
  22. 22.🫧 Is plain water an acid, a base or neutral? (a) neutral (b) an acid (c) a base
  23. 23.🧺 Which of these is needed for the turmeric test? (a) a comb (b) a mirror (c) white paper strips (d) a magnet
  24. 24.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it stays yellow (b) it turns blue (c) reddish-brown (d) it turns green
  25. 25.🛟 Turmeric stains clothes. What should you wear? (a) your best clothes (b) a white party dress (c) an old shirt or apron (d) your school uniform
  26. 26.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is the one thing we change. (a) False (b) True
  27. 27.🧺 Do we need water for the turmeric test? (a) not needed (b) needed
  28. 28.🧺 Do we need yeast for the turmeric test? (a) not needed (b) needed
  29. 29.🟡 Which of these keeps turmeric yellow? (a) detergent water (b) salt water (c) soap solution (d) baking soda water
  30. 30.🧺 Which of these is needed for the turmeric test? (a) a balloon (b) a mirror (c) a magnet (d) turmeric powder
  31. 31.🧺 Which of these is not needed for the turmeric test? (a) a comb (b) turmeric powder (c) water (d) a dropper or spoon
  32. 32.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is kept the same. (a) True (b) False
  33. 33.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the light we look in is what we measure. (a) True (b) False
  34. 34.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the liquid we test”? (a) we measure it (b) we keep it the same (c) we change it
  35. 35.🧺 Do we need a comb for the turmeric test? (a) needed (b) not needed
  36. 36.🟡 Which of these turns turmeric reddish-brown? (a) plain water (b) salt water (c) soap solution (d) vinegar
  37. 37.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the colour we see (b) the number of drops (c) the liquid we test
  38. 38.🟡 Which of these keeps turmeric yellow? (a) sugar water (b) detergent water (c) baking soda water (d) soap solution
  39. 39.🟡 Which of these turns turmeric reddish-brown? (a) tamarind water (b) lemon juice (c) baking soda water (d) plain water
  40. 40.🛟 Which rule keeps the turmeric test safe? (a) mix bathroom cleaners (b) sniff each bottle hard (c) use only kitchen items (d) sip each liquid

Answer key

  1. an acid
  2. reddish-brown
  3. False
  4. False
  5. an acid
  6. False
  7. turns reddish-brown
  8. needed
  9. not needed
  10. it stays yellow
  11. not needed
  12. curd
  13. False
  14. we keep it the same
  15. False
  16. True
  17. not needed
  18. False
  19. sugar water
  20. reddish
  21. vinegar
  22. neutral
  23. white paper strips
  24. reddish-brown
  25. an old shirt or apron
  26. False
  27. needed
  28. not needed
  29. salt water
  30. turmeric powder
  31. a comb
  32. False
  33. False
  34. we change it
  35. not needed
  36. soap solution
  37. the number of drops
  38. sugar water
  39. baking soda water
  40. use only kitchen items

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