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Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 639 · 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.

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

Answer key

  1. a dropper or spoon
  2. tamarind water
  3. yeast
  4. True
  5. True
  6. True
  7. False
  8. salt water
  9. a balloon
  10. we keep it the same
  11. it turns yellow again
  12. not needed
  13. it stays yellow
  14. needed
  15. True
  16. stays yellow
  17. reddish
  18. detergent water
  19. use only kitchen items
  20. False
  21. soap solution
  22. True
  23. plain water
  24. needed
  25. False
  26. False
  27. soap solution
  28. False
  29. orange juice
  30. baking soda water
  31. an old shirt or apron
  32. a magnet
  33. salt water
  34. the colour we see
  35. False
  36. tamarind water
  37. vinegar
  38. we keep it the same
  39. the liquid we test
  40. True

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