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Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 129 · 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 not needed for the turmeric test? (a) a balloon (b) a dropper or spoon (c) lemon juice (d) soap solution
  2. 2.🧺 Which of these is not needed for the turmeric test? (a) white paper strips (b) a dropper or spoon (c) turmeric powder (d) a mirror
  3. 3.🧺 Do we need a dropper or spoon for the turmeric test? (a) not needed (b) needed
  4. 4.🫧 Is curd an acid, a base or neutral? (a) a base (b) an acid (c) neutral
  5. 5.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns red (b) it turns black (c) it stays yellow (d) it turns blue
  6. 6.True or false: salt water is neutral. (a) False (b) True
  7. 7.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is kept the same. (a) False (b) True
  8. 8.🫧 Which of these is a base? (a) salt water (b) vinegar (c) orange juice (d) baking soda water
  9. 9.🫧 Is soap solution an acid, a base or neutral? (a) an acid (b) a base (c) neutral
  10. 10.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the colour we see”? (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 blue (b) it turns darker red (c) it turns yellow again (d) it disappears
  12. 12.True or false: sugar water is a base. (a) True (b) False
  13. 13.True or false: curd is a base. (a) False (b) True
  14. 14.🫧 Is lemon juice an acid, a base or neutral? (a) a base (b) an acid (c) neutral
  15. 15.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) water (c) a mirror (d) soap solution
  16. 16.🛟 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
  17. 17.True or false: soap solution is needed for the turmeric test. (a) True (b) False
  18. 18.True or false: a mirror is needed for the turmeric test. (a) True (b) False
  19. 19.🟡 Turmeric paper meets salt water. What happens? (a) stays yellow (b) turns reddish-brown
  20. 20.🧺 Which of these is needed for the turmeric test? (a) yeast (b) water (c) a battery cell (d) a balloon
  21. 21.True or false: vinegar turns turmeric reddish-brown. (a) False (b) True
  22. 22.🛟 Which rule keeps the turmeric test safe? (a) sip each liquid (b) mix bathroom cleaners (c) use only kitchen items (d) sniff each bottle hard
  23. 23.True or false: sugar water turns turmeric reddish-brown. (a) False (b) True
  24. 24.🧺 Which of these is not needed for the turmeric test? (a) lemon juice (b) soap solution (c) water (d) yeast
  25. 25.True or false: turmeric powder is not needed for the turmeric test. (a) False (b) True
  26. 26.🫧 Is vinegar an acid, a base or neutral? (a) a base (b) neutral (c) an acid
  27. 27.🔍 Which is the odd one out? (a) plain water (b) vinegar (c) tamarind water (d) soap solution
  28. 28.🧺 Do we need white paper strips for the turmeric test? (a) needed (b) not needed
  29. 29.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is kept the same. (a) True (b) False
  30. 30.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the number of drops”? (a) we keep it the same (b) we change it (c) we measure it
  31. 31.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the turmeric paper”? (a) we change it (b) we keep it the same (c) we measure it
  32. 32.True or false: vinegar keeps turmeric yellow. (a) True (b) False
  33. 33.🧺 Which of these is needed for the turmeric test? (a) lemon juice (b) a comb (c) a battery cell (d) a balloon
  34. 34.🔮 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
  35. 35.True or false: curd is an acid. (a) False (b) True
  36. 36.🟡 Turmeric paper meets sugar water. What happens? (a) turns reddish-brown (b) stays yellow
  37. 37.True or false: a magnet is needed for the turmeric test. (a) False (b) True
  38. 38.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) white paper strips (b) lemon juice (c) turmeric powder (d) a magnet
  39. 39.🫧 Which of these is an acid? (a) orange juice (b) sugar water (c) soap solution (d) baking soda water
  40. 40.True or false: soap solution is a base. (a) True (b) False

Answer key

  1. a balloon
  2. a mirror
  3. needed
  4. an acid
  5. it stays yellow
  6. True
  7. True
  8. baking soda water
  9. a base
  10. we measure it
  11. it turns yellow again
  12. False
  13. False
  14. an acid
  15. a mirror
  16. an old shirt or apron
  17. True
  18. False
  19. stays yellow
  20. water
  21. False
  22. use only kitchen items
  23. False
  24. yeast
  25. False
  26. an acid
  27. soap solution
  28. needed
  29. False
  30. we keep it the same
  31. we keep it the same
  32. True
  33. lemon juice
  34. reddish
  35. True
  36. stays yellow
  37. False
  38. a magnet
  39. orange juice
  40. True

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