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Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 897 · 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: detergent water turns turmeric reddish-brown. (a) False (b) True
  2. 2.True or false: salt water is neutral. (a) True (b) False
  3. 3.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is what we measure. (a) True (b) False
  4. 4.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is what we measure. (a) True (b) False
  5. 5.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the liquid we test (b) the colour we see (c) the turmeric paper
  6. 6.True or false: a magnet is not needed for the turmeric test. (a) False (b) True
  7. 7.🧺 Which of these is needed for the turmeric test? (a) turmeric powder (b) a balloon (c) a battery cell (d) a mirror
  8. 8.🫧 Is plain water an acid, a base or neutral? (a) a base (b) neutral (c) an acid
  9. 9.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) a comb (c) soap solution (d) a dropper or spoon
  10. 10.🛟 Turmeric stains clothes. What should you wear? (a) an old shirt or apron (b) your school uniform (c) a white party dress (d) your best clothes
  11. 11.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) a mirror (c) turmeric powder (d) white paper strips
  12. 12.🧺 Which of these is needed for the turmeric test? (a) a balloon (b) lemon juice (c) yeast (d) a mirror
  13. 13.🟡 Which of these turns turmeric reddish-brown? (a) plain water (b) baking soda water (c) sugar water (d) vinegar
  14. 14.True or false: tamarind water is an acid. (a) False (b) True
  15. 15.True or false: a magnet is needed for the turmeric test. (a) True (b) False
  16. 16.🔍 Which is the odd one out? (a) soap solution (b) baking soda water (c) detergent water (d) vinegar
  17. 17.True or false: water is needed for the turmeric test. (a) True (b) False
  18. 18.🧺 Do we need a comb for the turmeric test? (a) needed (b) not needed
  19. 19.🧺 Do we need a battery cell for the turmeric test? (a) needed (b) not needed
  20. 20.🟡 Turmeric paper meets baking soda water. What happens? (a) turns reddish-brown (b) stays yellow
  21. 21.🍋 A reddish turmeric spot gets a few drops of lemon juice. What happens? (a) it turns yellow again (b) it disappears (c) it turns blue (d) it turns darker red
  22. 22.True or false: orange juice is an acid. (a) True (b) False
  23. 23.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a dropper or spoon (b) water (c) a balloon (d) turmeric powder
  24. 24.⚖️ 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
  25. 25.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is the one thing we change. (a) False (b) True
  26. 26.🧺 Which of these is not needed for the turmeric test? (a) soap solution (b) lemon juice (c) a dropper or spoon (d) a balloon
  27. 27.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns black (b) it stays yellow (c) it turns blue (d) it turns red
  28. 28.🫧 Which of these is neutral? (a) orange juice (b) detergent water (c) curd (d) salt water
  29. 29.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) turmeric powder (c) a battery cell (d) lemon juice
  30. 30.True or false: detergent water keeps turmeric yellow. (a) True (b) False
  31. 31.🟡 Turmeric paper meets lemon juice. What happens? (a) stays yellow (b) turns reddish-brown
  32. 32.🫧 Which of these is neutral? (a) lemon juice (b) plain water (c) detergent water (d) baking soda water
  33. 33.🛟 Which rule keeps the turmeric test safe? (a) mix bathroom cleaners (b) sip each liquid (c) sniff each bottle hard (d) use only kitchen items
  34. 34.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) white at once (b) bright blue (c) reddish (d) green
  35. 35.🧺 Do we need a balloon for the turmeric test? (a) needed (b) not needed
  36. 36.🧺 Which of these is not needed for the turmeric test? (a) a magnet (b) turmeric powder (c) lemon juice (d) water
  37. 37.True or false: baking soda water is neutral. (a) False (b) True
  38. 38.🧺 Which of these is needed for the turmeric test? (a) yeast (b) a comb (c) a battery cell (d) soap solution
  39. 39.⚖️ 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
  40. 40.True or false: turmeric powder is needed for the turmeric test. (a) False (b) True

Answer key

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

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