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Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 260 · 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: sugar water keeps turmeric yellow. (a) True (b) False
  2. 2.🟡 Which of these turns turmeric reddish-brown? (a) vinegar (b) plain water (c) lemon juice (d) baking soda water
  3. 3.🧺 Do we need turmeric powder for the turmeric test? (a) needed (b) not needed
  4. 4.True or false: sugar water is neutral. (a) False (b) True
  5. 5.🛟 Which rule keeps the turmeric test safe? (a) mix bathroom cleaners (b) use only kitchen items (c) sip each liquid (d) sniff each bottle hard
  6. 6.True or false: soap solution turns turmeric reddish-brown. (a) True (b) False
  7. 7.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) yeast (b) turmeric powder (c) white paper strips (d) soap solution
  8. 8.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the colour we see”? (a) we keep it the same (b) we change it (c) we measure it
  9. 9.🟡 Turmeric paper meets vinegar. What happens? (a) turns reddish-brown (b) stays yellow
  10. 10.🧺 Which of these is needed for the turmeric test? (a) a battery cell (b) a magnet (c) white paper strips (d) a balloon
  11. 11.🫧 Which of these is an acid? (a) salt water (b) sugar water (c) orange juice (d) plain water
  12. 12.🫧 Is salt water an acid, a base or neutral? (a) a base (b) neutral (c) an acid
  13. 13.🛟 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
  14. 14.True or false: salt water turns turmeric reddish-brown. (a) False (b) True
  15. 15.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the light we look in”? (a) we change it (b) we keep it the same (c) we measure it
  16. 16.True or false: baking soda water keeps turmeric yellow. (a) False (b) True
  17. 17.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the number of drops (b) the colour we see (c) the liquid we test
  18. 18.⚖️ 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
  19. 19.🟡 Which of these keeps turmeric yellow? (a) detergent water (b) soap solution (c) baking soda water (d) plain water
  20. 20.True or false: water is not needed for the turmeric test. (a) True (b) False
  21. 21.🟡 Turmeric paper meets salt water. What happens? (a) stays yellow (b) turns reddish-brown
  22. 22.🫧 Is baking soda water an acid, a base or neutral? (a) an acid (b) a base (c) neutral
  23. 23.🧺 Which of these is not needed for the turmeric test? (a) water (b) a balloon (c) turmeric powder (d) lemon juice
  24. 24.🔍 Which is the odd one out? (a) detergent water (b) soap solution (c) baking soda water (d) lemon juice
  25. 25.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a dropper or spoon (b) a balloon (c) water (d) lemon juice
  26. 26.📘 What do we call something that changes colour to show an acid or a base? (a) a magnet (b) an indicator (c) a pulley (d) a prism
  27. 27.True or false: lemon juice is not needed for the turmeric test. (a) False (b) True
  28. 28.True or false: white paper strips is needed for the turmeric test. (a) True (b) False
  29. 29.🧺 Do we need a magnet for the turmeric test? (a) not needed (b) needed
  30. 30.🟡 Turmeric paper meets sugar water. What happens? (a) turns reddish-brown (b) stays yellow
  31. 31.True or false: baking soda water turns turmeric reddish-brown. (a) True (b) False
  32. 32.True or false: a magnet is not needed for the turmeric test. (a) False (b) True
  33. 33.True or false: detergent water turns turmeric reddish-brown. (a) True (b) False
  34. 34.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) reddish-brown (b) it turns blue (c) it turns green (d) it stays yellow
  35. 35.🟡 Turmeric paper meets tamarind water. What happens? (a) turns reddish-brown (b) stays yellow
  36. 36.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) green (b) reddish-brown (c) it stays white (d) bright blue
  37. 37.🧺 Which of these is not needed for the turmeric test? (a) a magnet (b) water (c) soap solution (d) lemon juice
  38. 38.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) a dropper or spoon (c) water (d) a magnet
  39. 39.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is kept the same. (a) False (b) True
  40. 40.🫧 Is tamarind water an acid, a base or neutral? (a) a base (b) an acid (c) neutral

Answer key

  1. True
  2. baking soda water
  3. needed
  4. True
  5. use only kitchen items
  6. True
  7. yeast
  8. we measure it
  9. stays yellow
  10. white paper strips
  11. orange juice
  12. neutral
  13. an old shirt or apron
  14. False
  15. we keep it the same
  16. False
  17. the number of drops
  18. the light we look in
  19. plain water
  20. False
  21. stays yellow
  22. a base
  23. a balloon
  24. lemon juice
  25. a balloon
  26. an indicator
  27. False
  28. True
  29. not needed
  30. stays yellow
  31. True
  32. True
  33. True
  34. reddish-brown
  35. stays yellow
  36. reddish-brown
  37. a magnet
  38. a magnet
  39. True
  40. an acid

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