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Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 953 · 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.⚖️ 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
  2. 2.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is kept the same. (a) False (b) True
  3. 3.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is what we measure. (a) True (b) False
  4. 4.🟡 Turmeric paper meets soap solution. What happens? (a) turns reddish-brown (b) stays yellow
  5. 5.🧺 Do we need a magnet for the turmeric test? (a) not needed (b) needed
  6. 6.🔍 Which is the odd one out? (a) salt water (b) soap solution (c) lemon juice (d) sugar water
  7. 7.🛟 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
  8. 8.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the liquid we test (b) the turmeric paper (c) the colour we see (d) the number of drops
  9. 9.🫧 Is salt water an acid, a base or neutral? (a) a base (b) an acid (c) neutral
  10. 10.🛟 Turmeric stains clothes. What should you wear? (a) your best clothes (b) your school uniform (c) an old shirt or apron (d) a white party dress
  11. 11.🧺 Do we need a balloon for the turmeric test? (a) needed (b) not needed
  12. 12.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it turns blue (b) it turns green (c) reddish-brown (d) it stays yellow
  13. 13.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the liquid we test (b) the colour we see (c) the turmeric paper
  14. 14.True or false: white paper strips is needed for the turmeric test. (a) False (b) True
  15. 15.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) white paper strips (b) lemon juice (c) water (d) a comb
  16. 16.🟡 Turmeric paper meets plain water. What happens? (a) turns reddish-brown (b) stays yellow
  17. 17.True or false: salt water turns turmeric reddish-brown. (a) False (b) True
  18. 18.🔍 Which is the odd one out? (a) detergent water (b) vinegar (c) soap solution (d) baking soda water
  19. 19.🔍 Which is the odd one out? (a) detergent water (b) baking soda water (c) soap solution (d) plain water
  20. 20.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns black (b) it turns red (c) it turns blue (d) it stays yellow
  21. 21.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the light we look in”? (a) we change it (b) we keep it the same (c) we measure it
  22. 22.🧺 Which of these is not needed for the turmeric test? (a) lemon juice (b) a dropper or spoon (c) a comb (d) soap solution
  23. 23.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a mirror (b) turmeric powder (c) soap solution (d) water
  24. 24.🔍 Which is the odd one out? (a) plain water (b) lemon juice (c) vinegar (d) baking soda water
  25. 25.🫧 Is sugar water an acid, a base or neutral? (a) a base (b) an acid (c) neutral
  26. 26.🟡 Turmeric paper meets baking soda water. What happens? (a) turns reddish-brown (b) stays yellow
  27. 27.🧺 Which of these is not needed for the turmeric test? (a) turmeric powder (b) lemon juice (c) water (d) a balloon
  28. 28.🟡 Which of these turns turmeric reddish-brown? (a) soap solution (b) plain water (c) salt water (d) lemon juice
  29. 29.True or false: water is not needed for the turmeric test. (a) True (b) False
  30. 30.🫧 Is soap solution an acid, a base or neutral? (a) neutral (b) an acid (c) a base
  31. 31.True or false: orange juice is a base. (a) False (b) True
  32. 32.🟡 Turmeric paper meets sugar water. What happens? (a) turns reddish-brown (b) stays yellow
  33. 33.True or false: sugar water keeps turmeric yellow. (a) True (b) False
  34. 34.🫧 Which of these is neutral? (a) sugar water (b) curd (c) vinegar (d) lemon juice
  35. 35.True or false: soap solution is neutral. (a) True (b) False
  36. 36.🫧 Is vinegar an acid, a base or neutral? (a) a base (b) neutral (c) an acid
  37. 37.🟡 Turmeric paper meets detergent water. What happens? (a) turns reddish-brown (b) stays yellow
  38. 38.True or false: sugar water is an acid. (a) False (b) True
  39. 39.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is what we measure. (a) True (b) False
  40. 40.🧺 Which of these is needed for the turmeric test? (a) a magnet (b) a comb (c) yeast (d) turmeric powder

Answer key

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

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