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Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 979 · 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 mirror for the turmeric test? (a) needed (b) not needed
  2. 2.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the liquid we test”? (a) we keep it the same (b) we change it (c) we measure it
  3. 3.True or false: a balloon is needed for the turmeric test. (a) False (b) True
  4. 4.🔍 Which is the odd one out? (a) plain water (b) soap solution (c) detergent water (d) baking soda water
  5. 5.🫧 Is baking soda water an acid, a base or neutral? (a) an acid (b) neutral (c) a base
  6. 6.True or false: lemon juice turns turmeric reddish-brown. (a) False (b) True
  7. 7.⚖️ 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 liquid we test (c) the turmeric paper (d) the number of drops
  8. 8.⚖️ 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
  9. 9.🧺 Do we need white paper strips for the turmeric test? (a) not needed (b) needed
  10. 10.🧺 Which of these is not needed for the turmeric test? (a) a dropper or spoon (b) a balloon (c) lemon juice (d) white paper strips
  11. 11.🟡 Why does soap solution change turmeric’s colour? (a) soap water is a base (b) soap is hot (c) soap is an acid (d) soap is magnetic
  12. 12.🟡 Which of these turns turmeric reddish-brown? (a) tamarind water (b) salt water (c) plain water (d) detergent water
  13. 13.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the number of drops”? (a) we keep it the same (b) we change it (c) we measure it
  14. 14.🛟 Turmeric stains clothes. What should you wear? (a) an old shirt or apron (b) your best clothes (c) a white party dress (d) your school uniform
  15. 15.🟡 Which of these keeps turmeric yellow? (a) baking soda water (b) lemon juice (c) soap solution (d) detergent water
  16. 16.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the colour we see”? (a) we change it (b) we measure it (c) we keep it the same
  17. 17.🫧 Is tamarind water an acid, a base or neutral? (a) a base (b) neutral (c) an acid
  18. 18.🔍 Which is the odd one out? (a) plain water (b) detergent water (c) sugar water (d) lemon juice
  19. 19.True or false: vinegar keeps turmeric yellow. (a) False (b) True
  20. 20.True or false: curd is an acid. (a) False (b) True
  21. 21.🫧 Which of these is an acid? (a) soap solution (b) vinegar (c) baking soda water (d) detergent water
  22. 22.🫧 Is lemon juice an acid, a base or neutral? (a) an acid (b) a base (c) neutral
  23. 23.🫧 Which of these is neutral? (a) tamarind water (b) plain water (c) lemon juice (d) soap solution
  24. 24.🟡 Which of these turns turmeric reddish-brown? (a) plain water (b) baking soda water (c) tamarind water (d) lemon juice
  25. 25.True or false: a balloon is not needed for the turmeric test. (a) True (b) False
  26. 26.🟡 Which of these turns turmeric paper reddish-brown? (a) sugar water (b) lemon juice (c) vinegar (d) soap solution
  27. 27.🛟 Which rule keeps the turmeric test safe? (a) mix bathroom cleaners (b) use only kitchen items (c) sip each liquid (d) sniff each bottle hard
  28. 28.🟡 Turmeric paper meets soap solution. What happens? (a) stays yellow (b) turns reddish-brown
  29. 29.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns red (b) it turns black (c) it turns blue (d) it stays yellow
  30. 30.🧺 Do we need turmeric powder for the turmeric test? (a) needed (b) not needed
  31. 31.True or false: curd is neutral. (a) False (b) True
  32. 32.True or false: orange juice is an acid. (a) False (b) True
  33. 33.🔍 Which is the odd one out? (a) baking soda water (b) plain water (c) lemon juice (d) tamarind water
  34. 34.🍋 A reddish turmeric spot gets a few drops of lemon juice. What happens? (a) it disappears (b) it turns blue (c) it turns yellow again (d) it turns darker red
  35. 35.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is kept the same. (a) True (b) False
  36. 36.True or false: baking soda water keeps turmeric yellow. (a) False (b) True
  37. 37.🟡 Turmeric paper meets tamarind water. What happens? (a) stays yellow (b) turns reddish-brown
  38. 38.🔍 Which is the odd one out? (a) detergent water (b) lemon juice (c) baking soda water (d) soap solution
  39. 39.🟡 Turmeric paper meets salt water. What happens? (a) turns reddish-brown (b) stays yellow
  40. 40.True or false: salt water turns turmeric reddish-brown. (a) False (b) True

Answer key

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

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