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Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 43 · 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 battery cell (b) lemon juice (c) yeast (d) a magnet
  2. 2.True or false: tamarind water is an acid. (a) True (b) False
  3. 3.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) yeast (c) lemon juice (d) white paper strips
  4. 4.True or false: a balloon is not needed for the turmeric test. (a) False (b) True
  5. 5.True or false: baking soda water keeps turmeric yellow. (a) True (b) False
  6. 6.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it stays yellow (b) it turns blue (c) it turns green (d) reddish-brown
  7. 7.🫧 Is soap solution an acid, a base or neutral? (a) an acid (b) a base (c) neutral
  8. 8.🛟 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
  9. 9.🍋 A reddish turmeric spot gets a few drops of lemon juice. What happens? (a) it turns darker red (b) it turns yellow again (c) it turns blue (d) it disappears
  10. 10.True or false: turmeric powder is needed for the turmeric test. (a) False (b) True
  11. 11.True or false: vinegar is an acid. (a) False (b) True
  12. 12.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) turmeric powder (c) a balloon (d) a dropper or spoon
  13. 13.🛟 Turmeric stains clothes. What should you wear? (a) an old shirt or apron (b) a white party dress (c) your best clothes (d) your school uniform
  14. 14.🧺 Which of these is needed for the turmeric test? (a) yeast (b) a balloon (c) a mirror (d) soap solution
  15. 15.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) white paper strips (b) turmeric powder (c) a magnet (d) soap solution
  16. 16.True or false: detergent water is a base. (a) False (b) True
  17. 17.🫧 Which of these is neutral? (a) curd (b) orange juice (c) soap solution (d) salt water
  18. 18.🔍 Which is the odd one out? (a) sugar water (b) baking soda water (c) soap solution (d) detergent water
  19. 19.True or false: baking soda water turns turmeric reddish-brown. (a) True (b) False
  20. 20.🧺 Which of these is not needed for the turmeric test? (a) a dropper or spoon (b) water (c) turmeric powder (d) a balloon
  21. 21.⚖️ 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
  22. 22.🟡 Turmeric paper meets sugar water. What happens? (a) stays yellow (b) turns reddish-brown
  23. 23.⚖️ 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
  24. 24.True or false: white paper strips is not needed for the turmeric test. (a) True (b) False
  25. 25.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the number of drops (b) the colour we see (c) the liquid we test
  26. 26.True or false: soap solution is not needed for the turmeric test. (a) False (b) True
  27. 27.🧺 Do we need a comb for the turmeric test? (a) not needed (b) needed
  28. 28.🔍 Which is the odd one out? (a) detergent water (b) baking soda water (c) tamarind water (d) soap solution
  29. 29.🟡 Which of these keeps turmeric yellow? (a) detergent water (b) baking soda water (c) soap solution (d) plain water
  30. 30.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the light we look in is what we measure. (a) True (b) False
  31. 31.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is what we measure. (a) True (b) False
  32. 32.🫧 Which of these is neutral? (a) detergent water (b) plain water (c) vinegar (d) tamarind water
  33. 33.🟡 Turmeric paper meets plain water. What happens? (a) stays yellow (b) turns reddish-brown
  34. 34.🫧 Which of these is neutral? (a) soap solution (b) baking soda water (c) sugar water (d) curd
  35. 35.🧺 Which of these is needed for the turmeric test? (a) a battery cell (b) white paper strips (c) a balloon (d) a mirror
  36. 36.True or false: tamarind water keeps turmeric yellow. (a) True (b) False
  37. 37.🧺 Which of these is needed for the turmeric test? (a) a magnet (b) a mirror (c) a balloon (d) a dropper or spoon
  38. 38.True or false: water is needed for the turmeric test. (a) True (b) False
  39. 39.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the colour we see (b) the liquid we test (c) the number of drops (d) the light we look in
  40. 40.True or false: soap solution turns turmeric reddish-brown. (a) False (b) True

Answer key

  1. lemon juice
  2. True
  3. yeast
  4. True
  5. False
  6. reddish-brown
  7. a base
  8. use only kitchen items
  9. it turns yellow again
  10. True
  11. True
  12. a balloon
  13. an old shirt or apron
  14. soap solution
  15. a magnet
  16. True
  17. salt water
  18. sugar water
  19. True
  20. a balloon
  21. False
  22. stays yellow
  23. False
  24. False
  25. the number of drops
  26. False
  27. not needed
  28. tamarind water
  29. plain water
  30. False
  31. False
  32. plain water
  33. stays yellow
  34. sugar water
  35. white paper strips
  36. True
  37. a dropper or spoon
  38. True
  39. the liquid we test
  40. True

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