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Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 524 · 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.🧺 Do we need a dropper or spoon for the turmeric test? (a) needed (b) not needed
  2. 2.🛟 Turmeric stains clothes. What should you wear? (a) an old shirt or apron (b) your school uniform (c) your best clothes (d) a white party dress
  3. 3.True or false: white paper strips is not needed for the turmeric test. (a) False (b) True
  4. 4.🟡 Which of these turns turmeric reddish-brown? (a) vinegar (b) soap solution (c) lemon juice (d) sugar water
  5. 5.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the colour we see (b) the liquid we test (c) the turmeric paper (d) the light we look in
  6. 6.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) green (b) reddish (c) white at once (d) bright blue
  7. 7.🛟 Which rule keeps the turmeric test safe? (a) sniff each bottle hard (b) mix bathroom cleaners (c) sip each liquid (d) use only kitchen items
  8. 8.🫧 Which of these is neutral? (a) lemon juice (b) vinegar (c) salt water (d) baking soda water
  9. 9.🧺 Which of these is not needed for the turmeric test? (a) a battery cell (b) lemon juice (c) turmeric powder (d) water
  10. 10.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the turmeric paper”? (a) we change it (b) we measure it (c) we keep it the same
  11. 11.⚖️ 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
  12. 12.True or false: a balloon is not needed for the turmeric test. (a) True (b) False
  13. 13.🟡 Turmeric paper meets baking soda water. What happens? (a) stays yellow (b) turns reddish-brown
  14. 14.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) green (b) reddish-brown (c) it stays white (d) bright blue
  15. 15.🫧 Is detergent water an acid, a base or neutral? (a) an acid (b) a base (c) neutral
  16. 16.🫧 Is orange juice an acid, a base or neutral? (a) neutral (b) a base (c) an acid
  17. 17.🫧 Which of these is an acid? (a) salt water (b) detergent water (c) tamarind water (d) soap solution
  18. 18.True or false: soap solution turns turmeric reddish-brown. (a) False (b) True
  19. 19.🔍 Which is the odd one out? (a) soap solution (b) plain water (c) baking soda water (d) detergent water
  20. 20.⚖️ 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
  21. 21.🧺 Do we need soap solution for the turmeric test? (a) needed (b) not needed
  22. 22.🧺 Do we need white paper strips for the turmeric test? (a) not needed (b) needed
  23. 23.True or false: lemon juice turns turmeric reddish-brown. (a) True (b) False
  24. 24.True or false: curd is an acid. (a) False (b) True
  25. 25.True or false: yeast is needed for the turmeric test. (a) False (b) True
  26. 26.True or false: baking soda water is an acid. (a) True (b) False
  27. 27.True or false: plain water turns turmeric reddish-brown. (a) False (b) True
  28. 28.🧺 Do we need a comb for the turmeric test? (a) needed (b) not needed
  29. 29.🫧 Which of these is an acid? (a) baking soda water (b) salt water (c) lemon juice (d) plain water
  30. 30.🫧 Which of these is a base? (a) curd (b) orange juice (c) soap solution (d) lemon juice
  31. 31.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) reddish-brown (b) it turns blue (c) it stays yellow (d) it turns green
  32. 32.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a comb (b) soap solution (c) white paper strips (d) water
  33. 33.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the light we look in (b) the colour we see (c) the liquid we test
  34. 34.🟡 Turmeric paper meets plain water. What happens? (a) stays yellow (b) turns reddish-brown
  35. 35.🧺 Which of these is needed for the turmeric test? (a) a balloon (b) white paper strips (c) yeast (d) a magnet
  36. 36.🟡 Turmeric paper meets soap solution. What happens? (a) stays yellow (b) turns reddish-brown
  37. 37.🟡 Which of these keeps turmeric yellow? (a) baking soda water (b) plain water (c) detergent water (d) soap solution
  38. 38.🧺 Do we need turmeric powder for the turmeric test? (a) not needed (b) needed
  39. 39.True or false: a mirror is not needed for the turmeric test. (a) False (b) True
  40. 40.True or false: a mirror is needed for the turmeric test. (a) False (b) True

Answer key

  1. needed
  2. an old shirt or apron
  3. False
  4. soap solution
  5. the liquid we test
  6. reddish
  7. use only kitchen items
  8. salt water
  9. a battery cell
  10. we keep it the same
  11. we keep it the same
  12. True
  13. turns reddish-brown
  14. reddish-brown
  15. a base
  16. an acid
  17. tamarind water
  18. True
  19. plain water
  20. True
  21. needed
  22. needed
  23. False
  24. True
  25. False
  26. False
  27. False
  28. not needed
  29. lemon juice
  30. soap solution
  31. reddish-brown
  32. a comb
  33. the light we look in
  34. stays yellow
  35. white paper strips
  36. turns reddish-brown
  37. plain water
  38. needed
  39. True
  40. False

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