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Turmeric Indicator Experiment Worksheet

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

Answer key

  1. a balloon
  2. True
  3. an acid
  4. neutral
  5. a balloon
  6. True
  7. False
  8. needed
  9. we keep it the same
  10. it stays yellow
  11. stays yellow
  12. soap solution
  13. it turns yellow again
  14. use only kitchen items
  15. True
  16. an indicator
  17. soap solution
  18. sugar water
  19. True
  20. detergent water
  21. needed
  22. True
  23. False
  24. baking soda water
  25. a base
  26. reddish
  27. we change it
  28. tamarind water
  29. an old shirt or apron
  30. False
  31. False
  32. a base
  33. lemon juice
  34. neutral
  35. False
  36. a battery cell
  37. False
  38. True
  39. a comb
  40. detergent water

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