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Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 516 · 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.🧺 Do we need white paper strips for the turmeric test? (a) not needed (b) needed
  2. 2.True or false: soap solution turns turmeric reddish-brown. (a) False (b) True
  3. 3.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) it stays white (b) green (c) reddish-brown (d) bright blue
  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 change it (c) we measure it
  5. 5.🟡 Turmeric paper meets lemon juice. What happens? (a) turns reddish-brown (b) stays yellow
  6. 6.🛟 Which rule keeps the turmeric test safe? (a) sip each liquid (b) use only kitchen items (c) sniff each bottle hard (d) mix bathroom cleaners
  7. 7.🫧 Which of these is a base? (a) sugar water (b) plain water (c) vinegar (d) detergent water
  8. 8.True or false: curd is neutral. (a) False (b) True
  9. 9.🫧 Which of these is an acid? (a) sugar water (b) baking soda water (c) salt water (d) lemon juice
  10. 10.🧺 Which of these is needed for the turmeric test? (a) a battery cell (b) a magnet (c) water (d) a balloon
  11. 11.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the number of drops”? (a) we change it (b) we measure it (c) we keep it the same
  12. 12.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is the one thing we change. (a) False (b) True
  13. 13.🧺 Which of these is not needed for the turmeric test? (a) white paper strips (b) lemon juice (c) a comb (d) turmeric powder
  14. 14.🛟 Turmeric stains clothes. What should you wear? (a) your best clothes (b) a white party dress (c) your school uniform (d) an old shirt or apron
  15. 15.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a mirror (b) white paper strips (c) a dropper or spoon (d) water
  16. 16.🧺 Which of these is not needed for the turmeric test? (a) soap solution (b) white paper strips (c) turmeric powder (d) a balloon
  17. 17.🫧 Which of these is a base? (a) plain water (b) vinegar (c) sugar water (d) baking soda water
  18. 18.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the turmeric paper (b) the colour we see (c) the light we look in (d) the liquid we test
  19. 19.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) white paper strips (b) turmeric powder (c) a dropper or spoon (d) a magnet
  20. 20.🟡 Which of these turns turmeric reddish-brown? (a) tamarind water (b) soap solution (c) salt water (d) plain water
  21. 21.🧺 Do we need a comb for the turmeric test? (a) not needed (b) needed
  22. 22.🔍 Which is the odd one out? (a) soap solution (b) baking soda water (c) detergent water (d) lemon juice
  23. 23.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the colour we see”? (a) we change it (b) we keep it the same (c) we measure it
  24. 24.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the colour we see (b) the light we look in (c) the liquid we test
  25. 25.🟡 Turmeric paper meets plain water. What happens? (a) stays yellow (b) turns reddish-brown
  26. 26.🫧 Is baking soda water an acid, a base or neutral? (a) an acid (b) neutral (c) a base
  27. 27.🫧 Is vinegar an acid, a base or neutral? (a) neutral (b) a base (c) an acid
  28. 28.True or false: sugar water is neutral. (a) False (b) True
  29. 29.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is what we measure. (a) True (b) False
  30. 30.True or false: lemon juice is an acid. (a) True (b) False
  31. 31.True or false: a mirror is not needed for the turmeric test. (a) True (b) False
  32. 32.🟡 Turmeric paper meets baking soda water. What happens? (a) turns reddish-brown (b) stays yellow
  33. 33.True or false: yeast is not needed for the turmeric test. (a) True (b) False
  34. 34.🟡 Turmeric paper meets soap solution. What happens? (a) stays yellow (b) turns reddish-brown
  35. 35.🧺 Do we need lemon juice for the turmeric test? (a) not needed (b) needed
  36. 36.True or false: a comb is not needed for the turmeric test. (a) False (b) True
  37. 37.True or false: a dropper or spoon is needed for the turmeric test. (a) False (b) True
  38. 38.🟡 Turmeric paper meets salt water. What happens? (a) turns reddish-brown (b) stays yellow
  39. 39.🫧 Is soap solution an acid, a base or neutral? (a) a base (b) an acid (c) neutral
  40. 40.🧺 Which of these is needed for the turmeric test? (a) lemon juice (b) a balloon (c) a magnet (d) a battery cell

Answer key

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

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