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Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 275 · 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.🫧 Which of these is neutral? (a) vinegar (b) sugar water (c) curd (d) tamarind water
  2. 2.True or false: a magnet is not needed for the turmeric test. (a) True (b) False
  3. 3.True or false: a mirror is not needed for the turmeric test. (a) False (b) True
  4. 4.True or false: tamarind water turns turmeric reddish-brown. (a) True (b) False
  5. 5.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) bright blue (b) green (c) it stays white (d) reddish-brown
  6. 6.True or false: vinegar is an acid. (a) True (b) False
  7. 7.True or false: a balloon is needed for the turmeric test. (a) True (b) False
  8. 8.🔍 Which is the odd one out? (a) lemon juice (b) detergent water (c) vinegar (d) sugar water
  9. 9.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is the one thing we change. (a) True (b) False
  10. 10.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it turns green (b) reddish-brown (c) it turns blue (d) it stays yellow
  11. 11.🛟 Which rule keeps the turmeric test safe? (a) mix bathroom cleaners (b) sniff each bottle hard (c) use only kitchen items (d) sip each liquid
  12. 12.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the number of drops”? (a) we measure it (b) we change it (c) we keep it the same
  13. 13.🧺 Do we need lemon juice for the turmeric test? (a) needed (b) not needed
  14. 14.📘 What do we call something that changes colour to show an acid or a base? (a) an indicator (b) a pulley (c) a magnet (d) a prism
  15. 15.🟡 Which of these turns turmeric reddish-brown? (a) detergent water (b) salt water (c) plain water (d) vinegar
  16. 16.🫧 Is salt water an acid, a base or neutral? (a) an acid (b) neutral (c) a base
  17. 17.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the turmeric paper”? (a) we keep it the same (b) we change it (c) we measure it
  18. 18.🧺 Which of these is needed for the turmeric test? (a) white paper strips (b) a battery cell (c) yeast (d) a comb
  19. 19.⚖️ 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
  20. 20.🧺 Which of these is not needed for the turmeric test? (a) white paper strips (b) water (c) a dropper or spoon (d) yeast
  21. 21.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) reddish (b) bright blue (c) green (d) white at once
  22. 22.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is kept the same. (a) False (b) True
  23. 23.⚖️ 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 change it (c) we measure it
  24. 24.🛟 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
  25. 25.🫧 Is soap solution an acid, a base or neutral? (a) neutral (b) an acid (c) a base
  26. 26.🟡 Which of these turns turmeric reddish-brown? (a) lemon juice (b) sugar water (c) soap solution (d) tamarind water
  27. 27.🧺 Do we need a magnet for the turmeric test? (a) needed (b) not needed
  28. 28.🟡 Turmeric paper meets salt water. What happens? (a) stays yellow (b) turns reddish-brown
  29. 29.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) white paper strips (b) a mirror (c) lemon juice (d) soap solution
  30. 30.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) a comb (c) soap solution (d) white paper strips
  31. 31.🫧 Is curd an acid, a base or neutral? (a) neutral (b) a base (c) an acid
  32. 32.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) yeast (c) a dropper or spoon (d) water
  33. 33.🟡 Which of these turns turmeric paper reddish-brown? (a) sugar water (b) lemon juice (c) vinegar (d) soap solution
  34. 34.⚖️ 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
  35. 35.🧺 Do we need soap solution for the turmeric test? (a) needed (b) not needed
  36. 36.🫧 Is sugar water an acid, a base or neutral? (a) an acid (b) a base (c) neutral
  37. 37.🟡 Turmeric paper meets tamarind water. What happens? (a) stays yellow (b) turns reddish-brown
  38. 38.True or false: white paper strips is not needed for the turmeric test. (a) False (b) True
  39. 39.True or false: lemon juice is not needed for the turmeric test. (a) False (b) True
  40. 40.🫧 Is orange juice an acid, a base or neutral? (a) a base (b) an acid (c) neutral

Answer key

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

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