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Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 319 · 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.🧺 Which of these is needed for the turmeric test? (a) a mirror (b) a magnet (c) white paper strips (d) a battery cell
  2. 2.True or false: a balloon is needed for the turmeric test. (a) True (b) False
  3. 3.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it stays yellow (b) it turns blue (c) it turns green (d) reddish-brown
  4. 4.🧺 Which of these is not needed for the turmeric test? (a) white paper strips (b) soap solution (c) a magnet (d) lemon juice
  5. 5.True or false: soap solution is a base. (a) True (b) False
  6. 6.🫧 Is detergent water an acid, a base or neutral? (a) neutral (b) a base (c) an acid
  7. 7.True or false: baking soda water keeps turmeric yellow. (a) True (b) False
  8. 8.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is what we measure. (a) False (b) True
  9. 9.🛟 Turmeric stains clothes. What should you wear? (a) an old shirt or apron (b) your school uniform (c) your best clothes (d) a white party dress
  10. 10.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) white paper strips (b) lemon juice (c) a dropper or spoon (d) a magnet
  11. 11.🟡 Which of these turns turmeric reddish-brown? (a) sugar water (b) detergent water (c) plain water (d) lemon juice
  12. 12.🫧 Is orange juice an acid, a base or neutral? (a) neutral (b) an acid (c) a base
  13. 13.True or false: yeast is needed for the turmeric test. (a) False (b) True
  14. 14.🧺 Do we need a dropper or spoon for the turmeric test? (a) not needed (b) needed
  15. 15.⚖️ 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
  16. 16.⚖️ 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
  17. 17.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) a battery cell (c) water (d) lemon juice
  18. 18.🫧 Is sugar water an acid, a base or neutral? (a) neutral (b) an acid (c) a base
  19. 19.🫧 Is salt water an acid, a base or neutral? (a) an acid (b) neutral (c) a base
  20. 20.🫧 Is baking soda water an acid, a base or neutral? (a) a base (b) neutral (c) an acid
  21. 21.True or false: detergent water turns turmeric reddish-brown. (a) True (b) False
  22. 22.True or false: salt water keeps turmeric yellow. (a) True (b) False
  23. 23.🟡 Which of these turns turmeric reddish-brown? (a) plain water (b) lemon juice (c) baking soda water (d) sugar water
  24. 24.🧺 Which of these is needed for the turmeric test? (a) lemon juice (b) a magnet (c) a mirror (d) a comb
  25. 25.🧺 Do we need soap solution for the turmeric test? (a) not needed (b) needed
  26. 26.True or false: lemon juice is an acid. (a) True (b) False
  27. 27.🟡 Turmeric paper meets lemon juice. What happens? (a) stays yellow (b) turns reddish-brown
  28. 28.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) reddish (b) green (c) bright blue (d) white at once
  29. 29.True or false: vinegar turns turmeric reddish-brown. (a) True (b) False
  30. 30.🧺 Do we need water for the turmeric test? (a) not needed (b) needed
  31. 31.🛟 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
  32. 32.🟡 Turmeric paper meets sugar water. What happens? (a) stays yellow (b) turns reddish-brown
  33. 33.🧺 Do we need a comb for the turmeric test? (a) not needed (b) needed
  34. 34.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the number of drops (b) the turmeric paper (c) the light we look in (d) the colour we see
  35. 35.⚖️ 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
  36. 36.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) yeast (c) white paper strips (d) turmeric powder
  37. 37.⚖️ 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 measure it (c) we change it
  38. 38.🔍 Which is the odd one out? (a) baking soda water (b) soap solution (c) detergent water (d) tamarind water
  39. 39.🫧 Which of these is neutral? (a) soap solution (b) vinegar (c) lemon juice (d) salt water
  40. 40.True or false: vinegar is neutral. (a) False (b) True

Answer key

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

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