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Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 943 · 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.

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

Answer key

  1. False
  2. vinegar
  3. lemon juice
  4. True
  5. False
  6. it stays yellow
  7. salt water
  8. yeast
  9. detergent water
  10. False
  11. a balloon
  12. yeast
  13. needed
  14. stays yellow
  15. sugar water
  16. stays yellow
  17. use only kitchen items
  18. an old shirt or apron
  19. True
  20. we keep it the same
  21. water
  22. the light we look in
  23. we measure it
  24. the colour we see
  25. True
  26. not needed
  27. needed
  28. an acid
  29. a mirror
  30. the turmeric paper
  31. False
  32. a mirror
  33. False
  34. False
  35. soap water is a base
  36. we keep it the same
  37. white paper strips
  38. not needed
  39. we change it
  40. False

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