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Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 656 · 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.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a battery cell (b) soap solution (c) white paper strips (d) turmeric powder
  2. 2.⚖️ 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 number of drops (c) the turmeric paper (d) the liquid we test
  3. 3.🟡 Which of these turns turmeric reddish-brown? (a) vinegar (b) baking soda water (c) plain water (d) salt water
  4. 4.True or false: baking soda water is neutral. (a) True (b) False
  5. 5.🫧 Is plain water an acid, a base or neutral? (a) a base (b) neutral (c) an acid
  6. 6.⚖️ 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
  7. 7.🧺 Do we need turmeric powder for the turmeric test? (a) needed (b) not needed
  8. 8.🧺 Do we need white paper strips for the turmeric test? (a) needed (b) not needed
  9. 9.🧺 Which of these is needed for the turmeric test? (a) a magnet (b) a balloon (c) yeast (d) lemon juice
  10. 10.🛟 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
  11. 11.🟡 Turmeric paper meets detergent water. What happens? (a) stays yellow (b) turns reddish-brown
  12. 12.🫧 Is detergent water an acid, a base or neutral? (a) an acid (b) neutral (c) a base
  13. 13.True or false: soap solution turns turmeric reddish-brown. (a) True (b) False
  14. 14.True or false: vinegar turns turmeric reddish-brown. (a) True (b) False
  15. 15.🛟 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
  16. 16.True or false: a magnet is needed for the turmeric test. (a) True (b) False
  17. 17.🧺 Which of these is not needed for the turmeric test? (a) a dropper or spoon (b) lemon juice (c) yeast (d) water
  18. 18.🧺 Do we need a dropper or spoon for the turmeric test? (a) needed (b) not needed
  19. 19.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the turmeric paper”? (a) we change it (b) we measure it (c) we keep it the same
  20. 20.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is the one thing we change. (a) False (b) True
  21. 21.True or false: salt water is a base. (a) True (b) False
  22. 22.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) bright blue (b) green (c) reddish (d) white at once
  23. 23.True or false: water is needed for the turmeric test. (a) True (b) False
  24. 24.🧺 Which of these is needed for the turmeric test? (a) soap solution (b) a battery cell (c) a mirror (d) a magnet
  25. 25.⚖️ 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
  26. 26.🧺 Which of these is not needed for the turmeric test? (a) white paper strips (b) turmeric powder (c) water (d) a magnet
  27. 27.True or false: tamarind water turns turmeric reddish-brown. (a) False (b) True
  28. 28.🟡 Which of these turns turmeric reddish-brown? (a) salt water (b) soap solution (c) lemon juice (d) vinegar
  29. 29.True or false: soap solution keeps turmeric yellow. (a) False (b) True
  30. 30.🟡 Turmeric paper meets plain water. What happens? (a) turns reddish-brown (b) stays yellow
  31. 31.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) it stays white (b) reddish-brown (c) bright blue (d) green
  32. 32.⚖️ 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
  33. 33.⚖️ 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
  34. 34.🟡 Turmeric paper meets salt water. What happens? (a) stays yellow (b) turns reddish-brown
  35. 35.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns black (b) it turns blue (c) it turns red (d) it stays yellow
  36. 36.True or false: orange juice is a base. (a) True (b) False
  37. 37.True or false: turmeric powder is not needed for the turmeric test. (a) True (b) False
  38. 38.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) a balloon (c) soap solution (d) water
  39. 39.🟡 Which of these keeps turmeric yellow? (a) soap solution (b) baking soda water (c) plain water (d) detergent water
  40. 40.🫧 Which of these is an acid? (a) vinegar (b) salt water (c) soap solution (d) plain water

Answer key

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

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