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Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 790 · 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.🟡 Turmeric paper meets lemon juice. What happens? (a) turns reddish-brown (b) stays yellow
  2. 2.🛟 Which rule keeps the turmeric test safe? (a) use only kitchen items (b) sip each liquid (c) sniff each bottle hard (d) mix bathroom cleaners
  3. 3.🫧 Which of these is neutral? (a) plain water (b) lemon juice (c) vinegar (d) orange juice
  4. 4.⚖️ 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 measure it (c) we change it
  5. 5.True or false: soap solution is a base. (a) True (b) False
  6. 6.⚖️ 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
  7. 7.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) it stays white (b) green (c) bright blue (d) reddish-brown
  8. 8.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a dropper or spoon (b) turmeric powder (c) water (d) a magnet
  9. 9.🧺 Do we need a magnet for the turmeric test? (a) not needed (b) needed
  10. 10.True or false: baking soda water is an acid. (a) False (b) True
  11. 11.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a mirror (b) white paper strips (c) lemon juice (d) turmeric powder
  12. 12.🧺 Which of these is not needed for the turmeric test? (a) a comb (b) lemon juice (c) white paper strips (d) turmeric powder
  13. 13.True or false: detergent water is neutral. (a) True (b) False
  14. 14.True or false: lemon juice keeps turmeric yellow. (a) False (b) True
  15. 15.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) white at once (b) reddish (c) green (d) bright blue
  16. 16.🧺 Do we need lemon juice for the turmeric test? (a) needed (b) not needed
  17. 17.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is what we measure. (a) True (b) False
  18. 18.🟡 Which of these keeps turmeric yellow? (a) lemon juice (b) baking soda water (c) detergent water (d) soap solution
  19. 19.🟡 Which of these keeps turmeric yellow? (a) soap solution (b) baking soda water (c) vinegar (d) detergent water
  20. 20.🧺 Do we need turmeric powder for the turmeric test? (a) not needed (b) needed
  21. 21.🔍 Which is the odd one out? (a) plain water (b) detergent water (c) soap solution (d) baking soda water
  22. 22.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is kept the same. (a) True (b) False
  23. 23.True or false: a comb is not needed for the turmeric test. (a) False (b) True
  24. 24.🔍 Which is the odd one out? (a) baking soda water (b) vinegar (c) soap solution (d) detergent water
  25. 25.🫧 Which of these is an acid? (a) plain water (b) detergent water (c) tamarind water (d) soap solution
  26. 26.🧺 Do we need a balloon for the turmeric test? (a) not needed (b) needed
  27. 27.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is the one thing we change. (a) False (b) True
  28. 28.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) water (c) yeast (d) lemon juice
  29. 29.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the light we look in is the one thing we change. (a) False (b) True
  30. 30.🫧 Which of these is neutral? (a) orange juice (b) sugar water (c) baking soda water (d) vinegar
  31. 31.🍋 A drop of lemon juice falls on turmeric paper. What happens? (a) it turns black (b) it turns blue (c) it stays yellow (d) it turns red
  32. 32.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) white paper strips (c) water (d) a balloon
  33. 33.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the liquid we test”? (a) we measure it (b) we change it (c) we keep it the same
  34. 34.🟡 Which of these turns turmeric reddish-brown? (a) plain water (b) vinegar (c) lemon juice (d) baking soda water
  35. 35.🟡 Turmeric paper meets vinegar. What happens? (a) stays yellow (b) turns reddish-brown
  36. 36.🫧 Is lemon juice an acid, a base or neutral? (a) neutral (b) a base (c) an acid
  37. 37.True or false: soap solution is not needed for the turmeric test. (a) False (b) True
  38. 38.🧺 Which of these is not needed for the turmeric test? (a) lemon juice (b) water (c) white paper strips (d) a balloon
  39. 39.True or false: tamarind water turns turmeric reddish-brown. (a) False (b) True
  40. 40.🛟 Turmeric stains clothes. What should you wear? (a) your school uniform (b) a white party dress (c) your best clothes (d) an old shirt or apron

Answer key

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

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