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Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 343 · 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.True or false: a magnet is needed for the turmeric test. (a) True (b) False
  2. 2.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) white paper strips (b) turmeric powder (c) a dropper or spoon (d) a balloon
  3. 3.🫧 Is lemon juice an acid, a base or neutral? (a) neutral (b) an acid (c) a base
  4. 4.🛟 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
  5. 5.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) reddish (b) green (c) bright blue (d) white at once
  6. 6.🧺 Which of these is needed for the turmeric test? (a) a mirror (b) a comb (c) soap solution (d) a battery cell
  7. 7.True or false: a battery cell is needed for the turmeric test. (a) True (b) False
  8. 8.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the turmeric paper (b) the colour we see (c) the liquid we test
  9. 9.🟡 Turmeric paper meets salt water. What happens? (a) stays yellow (b) turns reddish-brown
  10. 10.🧺 Which of these is not needed for the turmeric test? (a) a dropper or spoon (b) water (c) a magnet (d) white paper strips
  11. 11.True or false: salt water turns turmeric reddish-brown. (a) True (b) False
  12. 12.True or false: vinegar keeps turmeric yellow. (a) True (b) False
  13. 13.🫧 Which of these is an acid? (a) detergent water (b) salt water (c) baking soda water (d) vinegar
  14. 14.🧺 Do we need soap solution for the turmeric test? (a) needed (b) not needed
  15. 15.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it stays yellow (b) it turns black (c) it turns red (d) it turns blue
  16. 16.🧺 Do we need a balloon for the turmeric test? (a) needed (b) not needed
  17. 17.True or false: vinegar is a base. (a) False (b) True
  18. 18.True or false: tamarind water is neutral. (a) True (b) False
  19. 19.🫧 Is orange juice an acid, a base or neutral? (a) a base (b) neutral (c) an acid
  20. 20.⚖️ 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 turmeric paper (d) the colour we see
  21. 21.⚖️ 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
  22. 22.⚖️ 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 change it (c) we measure it
  23. 23.🔍 Which is the odd one out? (a) vinegar (b) baking soda water (c) plain water (d) salt water
  24. 24.True or false: vinegar turns turmeric reddish-brown. (a) True (b) False
  25. 25.True or false: plain water is neutral. (a) True (b) False
  26. 26.🟡 Turmeric paper meets sugar water. What happens? (a) stays yellow (b) turns reddish-brown
  27. 27.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the number of drops (b) the liquid we test (c) the colour we see
  28. 28.🧺 Which of these is not needed for the turmeric test? (a) water (b) white paper strips (c) soap solution (d) a battery cell
  29. 29.🧺 Do we need white paper strips for the turmeric test? (a) needed (b) not needed
  30. 30.True or false: soap solution keeps turmeric yellow. (a) True (b) False
  31. 31.🫧 Is sugar water an acid, a base or neutral? (a) neutral (b) a base (c) an acid
  32. 32.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the turmeric paper”? (a) we measure it (b) we change it (c) we keep it the same
  33. 33.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is kept the same. (a) False (b) True
  34. 34.🔍 Which is the odd one out? (a) vinegar (b) soap solution (c) sugar water (d) salt water
  35. 35.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) lemon juice (c) a battery cell (d) turmeric powder
  36. 36.🧺 Which of these is not needed for the turmeric test? (a) turmeric powder (b) water (c) lemon juice (d) a balloon
  37. 37.True or false: orange juice is a base. (a) False (b) True
  38. 38.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the colour we see”? (a) we change it (b) we keep it the same (c) we measure it
  39. 39.True or false: detergent water turns turmeric reddish-brown. (a) False (b) True
  40. 40.🧺 Do we need a comb for the turmeric test? (a) not needed (b) needed

Answer key

  1. False
  2. a balloon
  3. an acid
  4. an old shirt or apron
  5. reddish
  6. soap solution
  7. False
  8. the turmeric paper
  9. stays yellow
  10. a magnet
  11. False
  12. True
  13. vinegar
  14. needed
  15. it stays yellow
  16. not needed
  17. False
  18. False
  19. an acid
  20. the colour we see
  21. we keep it the same
  22. we keep it the same
  23. baking soda water
  24. False
  25. True
  26. stays yellow
  27. the number of drops
  28. a battery cell
  29. needed
  30. False
  31. neutral
  32. we keep it the same
  33. True
  34. soap solution
  35. a battery cell
  36. a balloon
  37. False
  38. we measure it
  39. True
  40. not needed

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