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Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 849 · 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.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it turns blue (b) it turns green (c) reddish-brown (d) it stays yellow
  2. 2.True or false: a dropper or spoon is needed for the turmeric test. (a) False (b) True
  3. 3.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a comb (b) soap solution (c) turmeric powder (d) lemon juice
  4. 4.🫧 Is vinegar an acid, a base or neutral? (a) an acid (b) neutral (c) a base
  5. 5.🟡 Turmeric paper meets sugar water. What happens? (a) turns reddish-brown (b) stays yellow
  6. 6.🧺 Do we need a comb for the turmeric test? (a) needed (b) not needed
  7. 7.🫧 Which of these is an acid? (a) orange juice (b) plain water (c) salt water (d) sugar water
  8. 8.🧺 Do we need yeast for the turmeric test? (a) needed (b) not needed
  9. 9.True or false: tamarind water is neutral. (a) False (b) True
  10. 10.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) water (c) a dropper or spoon (d) a magnet
  11. 11.True or false: orange juice is an acid. (a) False (b) True
  12. 12.True or false: yeast is needed for the turmeric test. (a) True (b) False
  13. 13.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) green (b) bright blue (c) it stays white (d) reddish-brown
  14. 14.🫧 Which of these is neutral? (a) tamarind water (b) sugar water (c) soap solution (d) lemon juice
  15. 15.🔍 Which is the odd one out? (a) baking soda water (b) soap solution (c) detergent water (d) vinegar
  16. 16.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is the one thing we change. (a) True (b) False
  17. 17.True or false: a battery cell is needed for the turmeric test. (a) True (b) False
  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 liquid we test (c) the light we look in
  19. 19.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is the one thing we change. (a) True (b) False
  20. 20.True or false: detergent water is neutral. (a) True (b) False
  21. 21.🧺 Which of these is needed for the turmeric test? (a) a mirror (b) yeast (c) turmeric powder (d) a balloon
  22. 22.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it stays yellow (b) it turns red (c) it turns black (d) it turns blue
  23. 23.🧺 Do we need a battery cell for the turmeric test? (a) not needed (b) needed
  24. 24.🧺 Which of these is not needed for the turmeric test? (a) a comb (b) turmeric powder (c) white paper strips (d) soap solution
  25. 25.🟡 Which of these turns turmeric reddish-brown? (a) tamarind water (b) detergent water (c) sugar water (d) plain water
  26. 26.True or false: lemon juice is not needed for the turmeric test. (a) True (b) False
  27. 27.🫧 Is tamarind water an acid, a base or neutral? (a) a base (b) an acid (c) neutral
  28. 28.🛟 Turmeric stains clothes. What should you wear? (a) your school uniform (b) a white party dress (c) an old shirt or apron (d) your best clothes
  29. 29.True or false: vinegar keeps turmeric yellow. (a) True (b) False
  30. 30.🔍 Which is the odd one out? (a) baking soda water (b) soap solution (c) detergent water (d) salt water
  31. 31.🛟 Which rule keeps the turmeric test safe? (a) mix bathroom cleaners (b) sniff each bottle hard (c) sip each liquid (d) use only kitchen items
  32. 32.True or false: yeast is not needed for the turmeric test. (a) False (b) True
  33. 33.True or false: lemon juice is an acid. (a) True (b) False
  34. 34.True or false: soap solution is a base. (a) False (b) True
  35. 35.🧺 Do we need a balloon for the turmeric test? (a) not needed (b) needed
  36. 36.🫧 Is plain water an acid, a base or neutral? (a) an acid (b) a base (c) neutral
  37. 37.⚖️ 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 turmeric paper (c) the liquid we test (d) the number of drops
  38. 38.🧺 Which of these is needed for the turmeric test? (a) soap solution (b) a magnet (c) a mirror (d) a balloon
  39. 39.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a battery cell (b) water (c) white paper strips (d) a dropper or spoon
  40. 40.🫧 Which of these is a base? (a) baking soda water (b) plain water (c) sugar water (d) lemon juice

Answer key

  1. reddish-brown
  2. True
  3. a comb
  4. an acid
  5. stays yellow
  6. not needed
  7. orange juice
  8. not needed
  9. False
  10. a magnet
  11. True
  12. False
  13. reddish-brown
  14. sugar water
  15. vinegar
  16. False
  17. False
  18. the light we look in
  19. False
  20. False
  21. turmeric powder
  22. it stays yellow
  23. not needed
  24. a comb
  25. detergent water
  26. False
  27. an acid
  28. an old shirt or apron
  29. True
  30. salt water
  31. use only kitchen items
  32. True
  33. True
  34. True
  35. not needed
  36. neutral
  37. the liquid we test
  38. soap solution
  39. a battery cell
  40. baking soda water

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