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Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 981 · 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.🧺 Do we need a comb for the turmeric test? (a) not needed (b) needed
  2. 2.🧺 Do we need water for the turmeric test? (a) needed (b) not needed
  3. 3.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) green (b) bright blue (c) reddish (d) white at once
  4. 4.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) water (c) a balloon (d) lemon juice
  5. 5.🫧 Is tamarind water an acid, a base or neutral? (a) an acid (b) a base (c) neutral
  6. 6.🧺 Which of these is not needed for the turmeric test? (a) lemon juice (b) soap solution (c) white paper strips (d) a comb
  7. 7.🟡 Turmeric paper meets salt water. What happens? (a) turns reddish-brown (b) stays yellow
  8. 8.🧺 Do we need a magnet for the turmeric test? (a) needed (b) not needed
  9. 9.🟡 Which of these turns turmeric reddish-brown? (a) plain water (b) vinegar (c) sugar water (d) baking soda water
  10. 10.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) a dropper or spoon (c) water (d) a comb
  11. 11.⚖️ 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 measure it (c) we change it
  12. 12.🧺 Do we need white paper strips for the turmeric test? (a) needed (b) not needed
  13. 13.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the turmeric paper (b) the number of drops (c) the colour we see (d) the liquid we test
  14. 14.🛟 Turmeric stains clothes. What should you wear? (a) your best clothes (b) a white party dress (c) your school uniform (d) an old shirt or apron
  15. 15.True or false: soap solution is a base. (a) True (b) False
  16. 16.🔍 Which is the odd one out? (a) baking soda water (b) soap solution (c) lemon juice (d) detergent water
  17. 17.⚖️ 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
  18. 18.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a magnet (b) lemon juice (c) water (d) turmeric powder
  19. 19.🫧 Which of these is an acid? (a) baking soda water (b) detergent water (c) plain water (d) curd
  20. 20.🧺 Which of these is not needed for the turmeric test? (a) soap solution (b) turmeric powder (c) a balloon (d) white paper strips
  21. 21.🫧 Which of these is an acid? (a) detergent water (b) plain water (c) lemon juice (d) soap solution
  22. 22.🧺 Do we need turmeric powder for the turmeric test? (a) not needed (b) needed
  23. 23.True or false: soap solution turns turmeric reddish-brown. (a) False (b) True
  24. 24.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is kept the same. (a) True (b) False
  25. 25.🔍 Which is the odd one out? (a) soap solution (b) detergent water (c) vinegar (d) baking soda water
  26. 26.🔍 Which is the odd one out? (a) detergent water (b) plain water (c) baking soda water (d) soap solution
  27. 27.🫧 Which of these is a base? (a) plain water (b) tamarind water (c) curd (d) soap solution
  28. 28.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) yeast (b) water (c) soap solution (d) turmeric powder
  29. 29.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) a mirror (c) white paper strips (d) water
  30. 30.🫧 Which of these is a base? (a) baking soda water (b) orange juice (c) vinegar (d) plain water
  31. 31.🧺 Which of these is needed for the turmeric test? (a) a mirror (b) a dropper or spoon (c) a balloon (d) a magnet
  32. 32.🟡 Turmeric paper meets baking soda water. What happens? (a) stays yellow (b) turns reddish-brown
  33. 33.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is what we measure. (a) False (b) True
  34. 34.🧺 Which of these is needed for the turmeric test? (a) a battery cell (b) yeast (c) a magnet (d) lemon juice
  35. 35.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) green (b) bright blue (c) it stays white (d) reddish-brown
  36. 36.🟡 Which of these turns turmeric reddish-brown? (a) salt water (b) soap solution (c) vinegar (d) tamarind water
  37. 37.🛟 Which rule keeps the turmeric test safe? (a) sip each liquid (b) sniff each bottle hard (c) mix bathroom cleaners (d) use only kitchen items
  38. 38.True or false: turmeric powder is needed for the turmeric test. (a) False (b) True
  39. 39.True or false: soap solution keeps turmeric yellow. (a) False (b) True
  40. 40.True or false: lemon juice is an acid. (a) True (b) False

Answer key

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

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