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Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 261 · 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 salt water. What happens? (a) turns reddish-brown (b) stays yellow
  2. 2.True or false: yeast is not needed for the turmeric test. (a) True (b) False
  3. 3.⚖️ 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 colour we see
  4. 4.🔍 Which is the odd one out? (a) baking soda water (b) tamarind water (c) soap solution (d) detergent water
  5. 5.🧺 Which of these is needed for the turmeric test? (a) a comb (b) a battery cell (c) a balloon (d) soap solution
  6. 6.🟡 Which of these turns turmeric reddish-brown? (a) sugar water (b) lemon juice (c) salt water (d) baking soda water
  7. 7.🧺 Do we need lemon juice for the turmeric test? (a) needed (b) not needed
  8. 8.🧺 Do we need a comb for the turmeric test? (a) needed (b) not needed
  9. 9.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is kept the same. (a) True (b) False
  10. 10.🟡 Which of these turns turmeric reddish-brown? (a) plain water (b) vinegar (c) tamarind water (d) soap solution
  11. 11.True or false: a comb is needed for the turmeric test. (a) True (b) False
  12. 12.🧺 Which of these is needed for the turmeric test? (a) a mirror (b) lemon juice (c) a balloon (d) yeast
  13. 13.True or false: a magnet is needed for the turmeric test. (a) False (b) True
  14. 14.True or false: a dropper or spoon is not needed for the turmeric test. (a) True (b) False
  15. 15.True or false: orange juice is an acid. (a) False (b) True
  16. 16.🫧 Which of these is a base? (a) salt water (b) plain water (c) tamarind water (d) baking soda water
  17. 17.⚖️ 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
  18. 18.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) lemon juice (c) a mirror (d) white paper strips
  19. 19.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) white paper strips (c) a balloon (d) a dropper or spoon
  20. 20.True or false: lemon juice turns turmeric reddish-brown. (a) True (b) False
  21. 21.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the turmeric paper”? (a) we keep it the same (b) we measure it (c) we change it
  22. 22.True or false: vinegar is an acid. (a) True (b) False
  23. 23.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is kept the same. (a) False (b) True
  24. 24.🟡 Turmeric paper meets lemon juice. What happens? (a) turns reddish-brown (b) stays yellow
  25. 25.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) reddish (b) green (c) bright blue (d) white at once
  26. 26.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) soap solution (c) a battery cell (d) white paper strips
  27. 27.True or false: sugar water is neutral. (a) False (b) True
  28. 28.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) a dropper or spoon (c) yeast (d) soap solution
  29. 29.🧺 Which of these is not needed for the turmeric test? (a) a dropper or spoon (b) lemon juice (c) soap solution (d) a comb
  30. 30.True or false: vinegar is a base. (a) True (b) False
  31. 31.🧺 Which of these is needed for the turmeric test? (a) white paper strips (b) a mirror (c) a balloon (d) yeast
  32. 32.⚖️ 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
  33. 33.🔮 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
  34. 34.🍋 A drop of lemon juice falls on turmeric paper. What happens? (a) it stays yellow (b) it turns red (c) it turns blue (d) it turns black
  35. 35.True or false: plain water turns turmeric reddish-brown. (a) True (b) False
  36. 36.🟡 Turmeric paper meets tamarind water. What happens? (a) turns reddish-brown (b) stays yellow
  37. 37.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the light we look in (b) the colour we see (c) the liquid we test
  38. 38.True or false: turmeric powder is not needed for the turmeric test. (a) True (b) False
  39. 39.🛟 Which rule keeps the turmeric test safe? (a) sip each liquid (b) use only kitchen items (c) sniff each bottle hard (d) mix bathroom cleaners
  40. 40.🧺 Do we need yeast for the turmeric test? (a) needed (b) not needed

Answer key

  1. stays yellow
  2. True
  3. the liquid we test
  4. tamarind water
  5. soap solution
  6. baking soda water
  7. needed
  8. not needed
  9. True
  10. soap solution
  11. False
  12. lemon juice
  13. False
  14. False
  15. True
  16. baking soda water
  17. we change it
  18. a mirror
  19. a balloon
  20. False
  21. we keep it the same
  22. True
  23. True
  24. stays yellow
  25. reddish
  26. a battery cell
  27. True
  28. yeast
  29. a comb
  30. False
  31. white paper strips
  32. we keep it the same
  33. it stays yellow
  34. it stays yellow
  35. False
  36. stays yellow
  37. the light we look in
  38. False
  39. use only kitchen items
  40. not needed

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