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Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 448 · 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: baking soda water is an acid. (a) True (b) False
  2. 2.🧺 Do we need turmeric powder for the turmeric test? (a) needed (b) not needed
  3. 3.🟡 Turmeric paper meets tamarind water. What happens? (a) stays yellow (b) turns reddish-brown
  4. 4.🧺 Which of these is needed for the turmeric test? (a) yeast (b) a battery cell (c) a balloon (d) soap solution
  5. 5.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is what we measure. (a) False (b) True
  6. 6.🧺 Which of these is needed for the turmeric test? (a) a battery cell (b) a balloon (c) a magnet (d) white paper strips
  7. 7.🛟 Which rule keeps the turmeric test safe? (a) use only kitchen items (b) mix bathroom cleaners (c) sniff each bottle hard (d) sip each liquid
  8. 8.🔍 Which is the odd one out? (a) detergent water (b) baking soda water (c) tamarind water (d) soap solution
  9. 9.🧺 Do we need a mirror for the turmeric test? (a) needed (b) not needed
  10. 10.🧺 Do we need a magnet for the turmeric test? (a) needed (b) not needed
  11. 11.True or false: tamarind water keeps turmeric yellow. (a) True (b) False
  12. 12.⚖️ 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 measure it (c) we change it
  13. 13.🟡 Turmeric paper meets lemon juice. What happens? (a) stays yellow (b) turns reddish-brown
  14. 14.🫧 Which of these is a base? (a) tamarind water (b) vinegar (c) detergent water (d) orange juice
  15. 15.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the light we look in is kept the same. (a) True (b) False
  16. 16.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) turmeric powder (c) a mirror (d) water
  17. 17.🟡 Which of these turns turmeric reddish-brown? (a) plain water (b) baking soda water (c) sugar water (d) lemon juice
  18. 18.🟡 Turmeric paper meets baking soda water. What happens? (a) turns reddish-brown (b) stays yellow
  19. 19.True or false: plain water keeps turmeric yellow. (a) False (b) True
  20. 20.🫧 Is sugar water an acid, a base or neutral? (a) an acid (b) neutral (c) a base
  21. 21.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) turmeric powder (c) a magnet (d) lemon juice
  22. 22.⚖️ 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 number of drops (d) the colour we see
  23. 23.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the colour we see (b) the light we look in (c) the liquid we test
  24. 24.⚖️ 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
  25. 25.True or false: tamarind water is an acid. (a) True (b) False
  26. 26.⚖️ 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 colour we see (c) the liquid we test (d) the turmeric paper
  27. 27.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it turns green (b) it turns blue (c) it stays yellow (d) reddish-brown
  28. 28.🧺 Do we need a battery cell for the turmeric test? (a) needed (b) not needed
  29. 29.🫧 Which of these is a base? (a) salt water (b) soap solution (c) tamarind water (d) vinegar
  30. 30.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a battery cell (b) a dropper or spoon (c) white paper strips (d) water
  31. 31.🫧 Is plain water an acid, a base or neutral? (a) a base (b) an acid (c) neutral
  32. 32.🫧 Which of these is neutral? (a) plain water (b) detergent water (c) vinegar (d) orange juice
  33. 33.🧺 Do we need soap solution for the turmeric test? (a) needed (b) not needed
  34. 34.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is the one thing we change. (a) True (b) False
  35. 35.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns black (b) it turns blue (c) it turns red (d) it stays yellow
  36. 36.🫧 Which of these is an acid? (a) orange juice (b) baking soda water (c) soap solution (d) detergent water
  37. 37.🧺 Which of these is not needed for the turmeric test? (a) turmeric powder (b) lemon juice (c) water (d) yeast
  38. 38.True or false: sugar water keeps turmeric yellow. (a) True (b) False
  39. 39.True or false: a mirror is needed for the turmeric test. (a) True (b) False
  40. 40.🫧 Which of these is neutral? (a) soap solution (b) lemon juice (c) curd (d) sugar water

Answer key

  1. False
  2. needed
  3. stays yellow
  4. soap solution
  5. False
  6. white paper strips
  7. use only kitchen items
  8. tamarind water
  9. not needed
  10. not needed
  11. True
  12. we change it
  13. stays yellow
  14. detergent water
  15. True
  16. a mirror
  17. baking soda water
  18. turns reddish-brown
  19. True
  20. neutral
  21. a magnet
  22. the colour we see
  23. the light we look in
  24. we keep it the same
  25. True
  26. the liquid we test
  27. reddish-brown
  28. not needed
  29. soap solution
  30. a battery cell
  31. neutral
  32. plain water
  33. needed
  34. True
  35. it stays yellow
  36. orange juice
  37. yeast
  38. True
  39. False
  40. sugar water

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