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Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 705 · 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: soap solution is not needed for the turmeric test. (a) False (b) True
  2. 2.🫧 Is baking soda water an acid, a base or neutral? (a) a base (b) neutral (c) an acid
  3. 3.🟡 Turmeric paper meets tamarind water. What happens? (a) stays yellow (b) turns reddish-brown
  4. 4.🟡 Which of these keeps turmeric yellow? (a) detergent water (b) baking soda water (c) sugar water (d) soap solution
  5. 5.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the number of drops”? (a) we change it (b) we keep it the same (c) we measure it
  6. 6.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is what we measure. (a) False (b) True
  7. 7.True or false: lemon juice is a base. (a) True (b) False
  8. 8.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the turmeric paper (b) the liquid we test (c) the colour we see (d) the light we look in
  9. 9.🫧 Is sugar water an acid, a base or neutral? (a) neutral (b) an acid (c) a base
  10. 10.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is kept the same. (a) False (b) True
  11. 11.True or false: lemon juice keeps turmeric yellow. (a) True (b) False
  12. 12.🧺 Which of these is needed for the turmeric test? (a) white paper strips (b) a mirror (c) a battery cell (d) yeast
  13. 13.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) soap solution (c) a battery cell (d) turmeric powder
  14. 14.🧺 Do we need a comb for the turmeric test? (a) not needed (b) needed
  15. 15.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is kept the same. (a) False (b) True
  16. 16.🟡 Which of these turns turmeric reddish-brown? (a) plain water (b) salt water (c) soap solution (d) tamarind water
  17. 17.🛟 Turmeric stains clothes. What should you wear? (a) your school uniform (b) an old shirt or apron (c) a white party dress (d) your best clothes
  18. 18.🧺 Do we need a balloon for the turmeric test? (a) not needed (b) needed
  19. 19.🧺 Do we need water for the turmeric test? (a) not needed (b) needed
  20. 20.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) a mirror (c) water (d) a dropper or spoon
  21. 21.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the liquid we test”? (a) we measure it (b) we change it (c) we keep it the same
  22. 22.True or false: detergent water is neutral. (a) True (b) False
  23. 23.🟡 Turmeric paper meets plain water. What happens? (a) stays yellow (b) turns reddish-brown
  24. 24.🛟 Which rule keeps the turmeric test safe? (a) use only kitchen items (b) sniff each bottle hard (c) sip each liquid (d) mix bathroom cleaners
  25. 25.🧺 Which of these is not needed for the turmeric test? (a) a comb (b) white paper strips (c) soap solution (d) lemon juice
  26. 26.True or false: orange juice is an acid. (a) True (b) False
  27. 27.🔍 Which is the odd one out? (a) detergent water (b) tamarind water (c) lemon juice (d) salt water
  28. 28.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) reddish-brown (b) it turns green (c) it stays yellow (d) it turns blue
  29. 29.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the liquid we test (b) the light we look in (c) the turmeric paper (d) the number of drops
  30. 30.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns black (b) it turns red (c) it stays yellow (d) it turns blue
  31. 31.🧺 Which of these is needed for the turmeric test? (a) a mirror (b) soap solution (c) a battery cell (d) a magnet
  32. 32.🫧 Which of these is a base? (a) detergent water (b) tamarind water (c) curd (d) orange juice
  33. 33.True or false: soap solution turns turmeric reddish-brown. (a) False (b) True
  34. 34.🫧 Is soap solution an acid, a base or neutral? (a) a base (b) neutral (c) an acid
  35. 35.🧺 Which of these is needed for the turmeric test? (a) a magnet (b) a mirror (c) turmeric powder (d) a comb
  36. 36.🧺 Which of these is not needed for the turmeric test? (a) water (b) soap solution (c) turmeric powder (d) a balloon
  37. 37.🧺 Do we need a mirror for the turmeric test? (a) not needed (b) needed
  38. 38.🟡 Turmeric paper meets sugar water. What happens? (a) stays yellow (b) turns reddish-brown
  39. 39.True or false: salt water is neutral. (a) False (b) True
  40. 40.⚖️ 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

Answer key

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

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