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Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 768 · 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: lemon juice turns turmeric reddish-brown. (a) False (b) True
  2. 2.🟡 Which of these keeps turmeric yellow? (a) vinegar (b) soap solution (c) detergent water (d) baking soda water
  3. 3.⚖️ 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
  4. 4.🫧 Which of these is an acid? (a) detergent water (b) plain water (c) sugar water (d) vinegar
  5. 5.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) reddish (b) bright blue (c) white at once (d) green
  6. 6.🛟 Turmeric stains clothes. What should you wear? (a) a white party dress (b) an old shirt or apron (c) your best clothes (d) your school uniform
  7. 7.🟡 Turmeric paper meets detergent water. What happens? (a) stays yellow (b) turns reddish-brown
  8. 8.🛟 Which rule keeps the turmeric test safe? (a) sniff each bottle hard (b) use only kitchen items (c) mix bathroom cleaners (d) sip each liquid
  9. 9.True or false: sugar water is a base. (a) False (b) True
  10. 10.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the light we look in (b) the liquid we test (c) the colour we see
  11. 11.🔍 Which is the odd one out? (a) salt water (b) baking soda water (c) detergent water (d) soap solution
  12. 12.🔍 Which is the odd one out? (a) soap solution (b) baking soda water (c) detergent water (d) plain water
  13. 13.True or false: a mirror is needed for the turmeric test. (a) False (b) True
  14. 14.True or false: detergent water keeps turmeric yellow. (a) True (b) False
  15. 15.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the colour we see (b) the liquid we test (c) the number of drops
  16. 16.True or false: lemon juice is a base. (a) False (b) True
  17. 17.🟡 Turmeric paper meets vinegar. What happens? (a) turns reddish-brown (b) stays yellow
  18. 18.🧺 Which of these is not needed for the turmeric test? (a) yeast (b) lemon juice (c) water (d) white paper strips
  19. 19.🧺 Which of these is needed for the turmeric test? (a) a magnet (b) a balloon (c) a mirror (d) lemon juice
  20. 20.🧺 Which of these is not needed for the turmeric test? (a) lemon juice (b) water (c) turmeric powder (d) a magnet
  21. 21.🍋 A drop of lemon juice falls on turmeric paper. What happens? (a) it turns black (b) it stays yellow (c) it turns red (d) it turns blue
  22. 22.🟡 Which of these keeps turmeric yellow? (a) soap solution (b) detergent water (c) baking soda water (d) salt water
  23. 23.🫧 Which of these is a base? (a) detergent water (b) orange juice (c) salt water (d) sugar water
  24. 24.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) lemon juice (c) turmeric powder (d) yeast
  25. 25.True or false: soap solution turns turmeric reddish-brown. (a) False (b) True
  26. 26.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it turns green (b) reddish-brown (c) it turns blue (d) it stays yellow
  27. 27.🫧 Is orange juice an acid, a base or neutral? (a) an acid (b) neutral (c) a base
  28. 28.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is kept the same. (a) True (b) False
  29. 29.True or false: water is needed for the turmeric test. (a) False (b) True
  30. 30.🔍 Which is the odd one out? (a) detergent water (b) sugar water (c) soap solution (d) baking soda water
  31. 31.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) a dropper or spoon (c) a mirror (d) water
  32. 32.🔮 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
  33. 33.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) white paper strips (b) a dropper or spoon (c) a balloon (d) soap solution
  34. 34.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) reddish-brown (b) it stays white (c) green (d) bright blue
  35. 35.True or false: vinegar keeps turmeric yellow. (a) False (b) True
  36. 36.True or false: soap solution is a base. (a) True (b) False
  37. 37.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the light we look in”? (a) we measure it (b) we keep it the same (c) we change it
  38. 38.🟡 Which of these keeps turmeric yellow? (a) soap solution (b) detergent water (c) baking soda water (d) sugar water
  39. 39.True or false: soap solution is needed for the turmeric test. (a) True (b) False
  40. 40.🔍 Which is the odd one out? (a) sugar water (b) vinegar (c) plain water (d) baking soda water

Answer key

  1. False
  2. vinegar
  3. we change it
  4. vinegar
  5. reddish
  6. an old shirt or apron
  7. turns reddish-brown
  8. use only kitchen items
  9. False
  10. the light we look in
  11. salt water
  12. plain water
  13. False
  14. False
  15. the number of drops
  16. False
  17. stays yellow
  18. yeast
  19. lemon juice
  20. a magnet
  21. it stays yellow
  22. salt water
  23. detergent water
  24. yeast
  25. True
  26. reddish-brown
  27. an acid
  28. True
  29. True
  30. sugar water
  31. a mirror
  32. it stays yellow
  33. a balloon
  34. reddish-brown
  35. True
  36. True
  37. we keep it the same
  38. sugar water
  39. True
  40. baking soda water

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