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Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 453 · 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: soap solution is not needed for the turmeric test. (a) False (b) True
  2. 2.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) reddish-brown (b) it stays yellow (c) it turns blue (d) it turns green
  3. 3.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the turmeric paper (b) the liquid we test (c) the colour we see
  4. 4.🟡 Which of these keeps turmeric yellow? (a) baking soda water (b) soap solution (c) tamarind water (d) detergent water
  5. 5.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is what we measure. (a) True (b) False
  6. 6.True or false: salt water turns turmeric reddish-brown. (a) False (b) True
  7. 7.True or false: turmeric powder is not needed for the turmeric test. (a) True (b) False
  8. 8.🟡 Turmeric paper meets detergent water. What happens? (a) stays yellow (b) turns reddish-brown
  9. 9.True or false: baking soda water keeps turmeric yellow. (a) False (b) True
  10. 10.🧺 Do we need water for the turmeric test? (a) needed (b) not needed
  11. 11.🧺 Do we need a dropper or spoon for the turmeric test? (a) needed (b) not needed
  12. 12.📘 What do we call something that changes colour to show an acid or a base? (a) a pulley (b) a prism (c) a magnet (d) an indicator
  13. 13.True or false: plain water is a base. (a) True (b) False
  14. 14.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) soap solution (c) a magnet (d) lemon juice
  15. 15.🧺 Do we need a battery cell for the turmeric test? (a) not needed (b) needed
  16. 16.🟡 Turmeric paper meets salt water. What happens? (a) turns reddish-brown (b) stays yellow
  17. 17.True or false: soap solution turns turmeric reddish-brown. (a) False (b) True
  18. 18.⚖️ 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 change it (c) we measure it
  19. 19.True or false: water is not needed for the turmeric test. (a) False (b) True
  20. 20.🧺 Do we need white paper strips for the turmeric test? (a) not needed (b) needed
  21. 21.True or false: orange juice is a base. (a) True (b) False
  22. 22.🧺 Which of these is not needed for the turmeric test? (a) yeast (b) turmeric powder (c) water (d) a dropper or spoon
  23. 23.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the colour we see”? (a) we change it (b) we keep it the same (c) we measure it
  24. 24.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the liquid we test (b) the number of drops (c) the turmeric paper (d) the colour we see
  25. 25.🟡 Which of these keeps turmeric yellow? (a) detergent water (b) soap solution (c) lemon juice (d) baking soda water
  26. 26.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the number of drops”? (a) we measure it (b) we change it (c) we keep it the same
  27. 27.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the light we look in”? (a) we keep it the same (b) we change it (c) we measure it
  28. 28.🛟 Which rule keeps the turmeric test safe? (a) sip each liquid (b) sniff each bottle hard (c) use only kitchen items (d) mix bathroom cleaners
  29. 29.🟡 Turmeric paper meets soap solution. What happens? (a) stays yellow (b) turns reddish-brown
  30. 30.True or false: soap solution is a base. (a) True (b) False
  31. 31.True or false: soap solution keeps turmeric yellow. (a) False (b) True
  32. 32.🔍 Which is the odd one out? (a) plain water (b) detergent water (c) lemon juice (d) tamarind water
  33. 33.True or false: lemon juice is not needed for the turmeric test. (a) False (b) True
  34. 34.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is what we measure. (a) False (b) True
  35. 35.🟡 Turmeric paper meets tamarind water. What happens? (a) stays yellow (b) turns reddish-brown
  36. 36.🧺 Which of these is not needed for the turmeric test? (a) water (b) a dropper or spoon (c) a battery cell (d) white paper strips
  37. 37.🍋 A reddish turmeric spot gets a few drops of lemon juice. What happens? (a) it disappears (b) it turns yellow again (c) it turns darker red (d) it turns blue
  38. 38.True or false: tamarind water is a base. (a) False (b) True
  39. 39.🛟 Turmeric stains clothes. What should you wear? (a) your school uniform (b) an old shirt or apron (c) a white party dress (d) your best clothes
  40. 40.🧺 Which of these is needed for the turmeric test? (a) a balloon (b) water (c) a mirror (d) a battery cell

Answer key

  1. False
  2. reddish-brown
  3. the turmeric paper
  4. tamarind water
  5. True
  6. False
  7. False
  8. turns reddish-brown
  9. False
  10. needed
  11. needed
  12. an indicator
  13. False
  14. a magnet
  15. not needed
  16. stays yellow
  17. True
  18. we keep it the same
  19. False
  20. needed
  21. False
  22. yeast
  23. we measure it
  24. the liquid we test
  25. lemon juice
  26. we keep it the same
  27. we keep it the same
  28. use only kitchen items
  29. turns reddish-brown
  30. True
  31. False
  32. detergent water
  33. False
  34. False
  35. stays yellow
  36. a battery cell
  37. it turns yellow again
  38. False
  39. an old shirt or apron
  40. water

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