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Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 970 · 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.🛟 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
  2. 2.🟡 Which of these keeps turmeric yellow? (a) soap solution (b) baking soda water (c) detergent water (d) salt water
  3. 3.🫧 Is baking soda water an acid, a base or neutral? (a) neutral (b) a base (c) an acid
  4. 4.🧺 Which of these is needed for the turmeric test? (a) yeast (b) white paper strips (c) a mirror (d) a magnet
  5. 5.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is what we measure. (a) True (b) False
  6. 6.True or false: soap solution keeps turmeric yellow. (a) True (b) False
  7. 7.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is kept the same. (a) True (b) False
  8. 8.True or false: soap solution is neutral. (a) True (b) False
  9. 9.🔍 Which is the odd one out? (a) baking soda water (b) detergent water (c) lemon juice (d) soap solution
  10. 10.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) water (c) turmeric powder (d) a comb
  11. 11.🫧 Which of these is a base? (a) plain water (b) detergent water (c) vinegar (d) curd
  12. 12.True or false: water is needed for the turmeric test. (a) True (b) False
  13. 13.🧺 Do we need soap solution for the turmeric test? (a) needed (b) not needed
  14. 14.True or false: curd is a base. (a) True (b) False
  15. 15.🧺 Do we need turmeric powder for the turmeric test? (a) not needed (b) needed
  16. 16.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns black (b) it stays yellow (c) it turns blue (d) it turns red
  17. 17.🧺 Which of these is needed for the turmeric test? (a) a battery cell (b) a balloon (c) a mirror (d) turmeric powder
  18. 18.True or false: baking soda water is an acid. (a) True (b) False
  19. 19.🫧 Is salt water an acid, a base or neutral? (a) a base (b) neutral (c) an acid
  20. 20.🟡 Which of these keeps turmeric yellow? (a) detergent water (b) vinegar (c) baking soda water (d) soap solution
  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 turns turmeric reddish-brown? (a) detergent water (b) sugar water (c) lemon juice (d) vinegar
  23. 23.🟡 Which of these turns turmeric reddish-brown? (a) plain water (b) tamarind water (c) lemon juice (d) baking soda water
  24. 24.🔍 Which is the odd one out? (a) plain water (b) tamarind water (c) sugar water (d) baking soda water
  25. 25.🔍 Which is the odd one out? (a) soap solution (b) baking soda water (c) salt water (d) detergent water
  26. 26.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a dropper or spoon (b) lemon juice (c) a balloon (d) turmeric powder
  27. 27.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the light we look in is kept the same. (a) True (b) False
  28. 28.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) white paper strips (b) water (c) a battery cell (d) turmeric powder
  29. 29.🟡 Turmeric paper meets sugar water. What happens? (a) stays yellow (b) turns reddish-brown
  30. 30.🟡 Which of these keeps turmeric yellow? (a) detergent water (b) baking soda water (c) plain water (d) soap solution
  31. 31.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the colour we see”? (a) we measure it (b) we change it (c) we keep it the same
  32. 32.True or false: detergent water is neutral. (a) True (b) False
  33. 33.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the turmeric paper (b) the liquid we test (c) the number of drops (d) the colour we see
  34. 34.🫧 Which of these is a base? (a) vinegar (b) curd (c) baking soda water (d) lemon juice
  35. 35.🫧 Is lemon juice an acid, a base or neutral? (a) a base (b) an acid (c) neutral
  36. 36.🛟 Which rule keeps the turmeric test safe? (a) sip each liquid (b) use only kitchen items (c) sniff each bottle hard (d) mix bathroom cleaners
  37. 37.🟡 Why does soap solution change turmeric’s colour? (a) soap is hot (b) soap is magnetic (c) soap is an acid (d) soap water is a base
  38. 38.True or false: a comb is not needed for the turmeric test. (a) False (b) True
  39. 39.🧺 Which of these is needed for the turmeric test? (a) water (b) a mirror (c) a battery cell (d) a balloon
  40. 40.🟡 Turmeric paper meets detergent water. What happens? (a) turns reddish-brown (b) stays yellow

Answer key

  1. an old shirt or apron
  2. salt water
  3. a base
  4. white paper strips
  5. False
  6. False
  7. False
  8. False
  9. lemon juice
  10. a comb
  11. detergent water
  12. True
  13. needed
  14. False
  15. needed
  16. it stays yellow
  17. turmeric powder
  18. False
  19. neutral
  20. vinegar
  21. we keep it the same
  22. detergent water
  23. baking soda water
  24. baking soda water
  25. salt water
  26. a balloon
  27. True
  28. a battery cell
  29. stays yellow
  30. plain water
  31. we measure it
  32. False
  33. the liquid we test
  34. baking soda water
  35. an acid
  36. use only kitchen items
  37. soap water is a base
  38. True
  39. water
  40. turns reddish-brown

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