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Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 248 · 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.🟡 Turmeric paper meets tamarind water. What happens? (a) stays yellow (b) turns reddish-brown
  2. 2.True or false: lemon juice is an acid. (a) False (b) True
  3. 3.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns blue (b) it stays yellow (c) it turns black (d) it turns red
  4. 4.🧺 Do we need water for the turmeric test? (a) needed (b) not needed
  5. 5.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a dropper or spoon (b) white paper strips (c) a battery cell (d) turmeric powder
  6. 6.🛟 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
  7. 7.🧺 Which of these is not needed for the turmeric test? (a) yeast (b) water (c) turmeric powder (d) white paper strips
  8. 8.🫧 Which of these is neutral? (a) sugar water (b) detergent water (c) orange juice (d) lemon juice
  9. 9.🟡 Turmeric paper meets soap solution. What happens? (a) turns reddish-brown (b) stays yellow
  10. 10.🔍 Which is the odd one out? (a) lemon juice (b) detergent water (c) soap solution (d) baking soda water
  11. 11.True or false: tamarind water keeps turmeric yellow. (a) False (b) True
  12. 12.🍋 A reddish turmeric spot gets a few drops of lemon juice. What happens? (a) it turns blue (b) it turns darker red (c) it disappears (d) it turns yellow again
  13. 13.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) lemon juice (c) water (d) a comb
  14. 14.🟡 Which of these turns turmeric reddish-brown? (a) salt water (b) baking soda water (c) sugar water (d) vinegar
  15. 15.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a dropper or spoon (b) turmeric powder (c) a magnet (d) soap solution
  16. 16.True or false: yeast is not needed for the turmeric test. (a) True (b) False
  17. 17.🔍 Which is the odd one out? (a) baking soda water (b) soap solution (c) detergent water (d) tamarind water
  18. 18.🟡 Turmeric paper meets lemon juice. What happens? (a) stays yellow (b) turns reddish-brown
  19. 19.🔍 Which is the odd one out? (a) tamarind water (b) lemon juice (c) detergent water (d) plain water
  20. 20.🫧 Is detergent water an acid, a base or neutral? (a) neutral (b) an acid (c) a base
  21. 21.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the light we look in is the one thing we change. (a) False (b) True
  22. 22.🧺 Do we need turmeric powder for the turmeric test? (a) not needed (b) needed
  23. 23.🧺 Which of these is needed for the turmeric test? (a) a battery cell (b) a comb (c) yeast (d) water
  24. 24.True or false: vinegar keeps turmeric yellow. (a) True (b) False
  25. 25.🟡 Which of these keeps turmeric yellow? (a) detergent water (b) salt water (c) soap solution (d) baking soda water
  26. 26.🫧 Is tamarind water an acid, a base or neutral? (a) a base (b) neutral (c) an acid
  27. 27.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is the one thing we change. (a) False (b) True
  28. 28.True or false: tamarind water is an acid. (a) True (b) False
  29. 29.⚖️ 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
  30. 30.🔮 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
  31. 31.🟡 Turmeric paper meets plain water. What happens? (a) stays yellow (b) turns reddish-brown
  32. 32.🔍 Which is the odd one out? (a) plain water (b) soap solution (c) vinegar (d) tamarind water
  33. 33.True or false: water is needed for the turmeric test. (a) True (b) False
  34. 34.True or false: tamarind water turns turmeric reddish-brown. (a) True (b) False
  35. 35.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is what we measure. (a) True (b) False
  36. 36.🟡 Turmeric paper meets salt water. What happens? (a) turns reddish-brown (b) stays yellow
  37. 37.🫧 Which of these is an acid? (a) vinegar (b) soap solution (c) sugar water (d) baking soda water
  38. 38.🧺 Which of these is not needed for the turmeric test? (a) water (b) a battery cell (c) soap solution (d) a dropper or spoon
  39. 39.🛟 Which rule keeps the turmeric test safe? (a) mix bathroom cleaners (b) sip each liquid (c) use only kitchen items (d) sniff each bottle hard
  40. 40.🟡 Turmeric paper meets baking soda water. What happens? (a) turns reddish-brown (b) stays yellow

Answer key

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

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