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Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 169 · 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.🛟 Turmeric stains clothes. What should you wear? (a) your school uniform (b) an old shirt or apron (c) your best clothes (d) a white party dress
  2. 2.True or false: soap solution is not needed for the turmeric test. (a) False (b) True
  3. 3.🔍 Which is the odd one out? (a) tamarind water (b) sugar water (c) lemon juice (d) baking soda water
  4. 4.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the liquid we test”? (a) we keep it the same (b) we change it (c) we measure it
  5. 5.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the colour we see”? (a) we keep it the same (b) we measure it (c) we change it
  6. 6.True or false: soap solution turns turmeric reddish-brown. (a) True (b) False
  7. 7.True or false: vinegar is an acid. (a) False (b) True
  8. 8.⚖️ 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 turmeric paper (c) the number of drops (d) the liquid we test
  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.🫧 Is plain water an acid, a base or neutral? (a) neutral (b) an acid (c) a base
  11. 11.True or false: a comb is not needed for the turmeric test. (a) False (b) True
  12. 12.🫧 Is tamarind water an acid, a base or neutral? (a) a base (b) neutral (c) an acid
  13. 13.🫧 Is sugar water an acid, a base or neutral? (a) a base (b) neutral (c) an acid
  14. 14.True or false: lemon juice is not needed for the turmeric test. (a) False (b) True
  15. 15.True or false: tamarind water is neutral. (a) True (b) False
  16. 16.True or false: turmeric powder is not needed for the turmeric test. (a) True (b) False
  17. 17.🧺 Do we need a balloon for the turmeric test? (a) needed (b) not needed
  18. 18.🧺 Do we need a dropper or spoon for the turmeric test? (a) needed (b) not needed
  19. 19.🟡 Which of these turns turmeric paper reddish-brown? (a) sugar water (b) vinegar (c) soap solution (d) lemon juice
  20. 20.🫧 Which of these is an acid? (a) baking soda water (b) plain water (c) soap solution (d) vinegar
  21. 21.🛟 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
  22. 22.🧺 Do we need a magnet for the turmeric test? (a) not needed (b) needed
  23. 23.True or false: lemon juice keeps turmeric yellow. (a) False (b) True
  24. 24.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) soap solution (c) white paper strips (d) a mirror
  25. 25.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) yeast (c) soap solution (d) a dropper or spoon
  26. 26.True or false: white paper strips is needed for the turmeric test. (a) True (b) False
  27. 27.🟡 Turmeric paper meets plain water. What happens? (a) turns reddish-brown (b) stays yellow
  28. 28.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) white paper strips (b) lemon juice (c) a comb (d) water
  29. 29.True or false: curd is a base. (a) True (b) False
  30. 30.⚖️ 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
  31. 31.True or false: baking soda water keeps turmeric yellow. (a) False (b) True
  32. 32.True or false: soap solution is needed for the turmeric test. (a) False (b) True
  33. 33.🟡 Turmeric paper meets sugar water. What happens? (a) stays yellow (b) turns reddish-brown
  34. 34.🧺 Do we need yeast for the turmeric test? (a) needed (b) not needed
  35. 35.🟡 Turmeric paper meets tamarind water. What happens? (a) turns reddish-brown (b) stays yellow
  36. 36.True or false: sugar water keeps turmeric yellow. (a) True (b) False
  37. 37.🫧 Which of these is a base? (a) plain water (b) baking soda water (c) salt water (d) lemon juice
  38. 38.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) soap solution (c) a balloon (d) water
  39. 39.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) green (b) white at once (c) bright blue (d) reddish
  40. 40.True or false: plain water keeps turmeric yellow. (a) False (b) True

Answer key

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

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