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Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 800 · 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.True or false: a dropper or spoon is needed for the turmeric test. (a) False (b) True
  2. 2.🫧 Which of these is neutral? (a) lemon juice (b) orange juice (c) soap solution (d) sugar water
  3. 3.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the light we look in (b) the colour we see (c) the number of drops (d) the liquid we test
  4. 4.True or false: vinegar keeps turmeric yellow. (a) False (b) True
  5. 5.⚖️ 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
  6. 6.True or false: orange juice is an acid. (a) True (b) False
  7. 7.🫧 Is tamarind water an acid, a base or neutral? (a) an acid (b) a base (c) neutral
  8. 8.🟡 Turmeric paper meets baking soda water. What happens? (a) turns reddish-brown (b) stays yellow
  9. 9.🛟 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
  10. 10.🛟 Turmeric stains clothes. What should you wear? (a) a white party dress (b) an old shirt or apron (c) your best clothes (d) your school uniform
  11. 11.True or false: water is needed for the turmeric test. (a) True (b) False
  12. 12.🟡 Which of these turns turmeric reddish-brown? (a) vinegar (b) sugar water (c) plain water (d) baking soda water
  13. 13.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the light we look in is kept the same. (a) False (b) True
  14. 14.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) soap solution (c) water (d) a mirror
  15. 15.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the liquid we test (b) the turmeric paper (c) the colour we see
  16. 16.⚖️ 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
  17. 17.🟡 Which of these keeps turmeric yellow? (a) soap solution (b) detergent water (c) baking soda water (d) lemon juice
  18. 18.🟡 Which of these turns turmeric reddish-brown? (a) soap solution (b) lemon juice (c) sugar water (d) tamarind water
  19. 19.True or false: a comb is needed for the turmeric test. (a) False (b) True
  20. 20.⚖️ 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
  21. 21.True or false: soap solution is neutral. (a) True (b) False
  22. 22.🫧 Is salt water an acid, a base or neutral? (a) a base (b) neutral (c) an acid
  23. 23.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the light we look in”? (a) we measure it (b) we change it (c) we keep it the same
  24. 24.🫧 Is plain water an acid, a base or neutral? (a) an acid (b) a base (c) neutral
  25. 25.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the colour we see”? (a) we change it (b) we measure it (c) we keep it the same
  26. 26.🧺 Which of these is needed for the turmeric test? (a) a comb (b) a magnet (c) lemon juice (d) yeast
  27. 27.🧺 Which of these is needed for the turmeric test? (a) a magnet (b) a balloon (c) yeast (d) white paper strips
  28. 28.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is kept the same. (a) False (b) True
  29. 29.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the light we look in (b) the liquid we test (c) the number of drops (d) the turmeric paper
  30. 30.🫧 Which of these is an acid? (a) vinegar (b) soap solution (c) salt water (d) baking soda water
  31. 31.True or false: sugar water is neutral. (a) False (b) True
  32. 32.True or false: lemon juice is not needed for the turmeric test. (a) True (b) False
  33. 33.🧺 Which of these is not needed for the turmeric test? (a) lemon juice (b) soap solution (c) a magnet (d) a dropper or spoon
  34. 34.True or false: a magnet is needed for the turmeric test. (a) False (b) True
  35. 35.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a dropper or spoon (b) a magnet (c) turmeric powder (d) lemon juice
  36. 36.True or false: a comb is not needed for the turmeric test. (a) False (b) True
  37. 37.True or false: tamarind water is neutral. (a) True (b) False
  38. 38.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) green (b) white at once (c) reddish (d) bright blue
  39. 39.🧺 Do we need a balloon for the turmeric test? (a) needed (b) not needed
  40. 40.🧺 Do we need white paper strips for the turmeric test? (a) not needed (b) needed

Answer key

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

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