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Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 528 · 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 rule keeps the turmeric test safe? (a) sip each liquid (b) use only kitchen items (c) sniff each bottle hard (d) mix bathroom cleaners
  2. 2.🫧 Is lemon juice an acid, a base or neutral? (a) neutral (b) a base (c) an acid
  3. 3.🧺 Which of these is not needed for the turmeric test? (a) a mirror (b) water (c) turmeric powder (d) a dropper or spoon
  4. 4.⚖️ 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
  5. 5.True or false: tamarind water is neutral. (a) False (b) True
  6. 6.True or false: a balloon is not needed for the turmeric test. (a) False (b) True
  7. 7.🔍 Which is the odd one out? (a) tamarind water (b) vinegar (c) soap solution (d) lemon juice
  8. 8.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is kept the same. (a) False (b) True
  9. 9.True or false: water is not needed for the turmeric test. (a) True (b) False
  10. 10.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) bright blue (b) green (c) white at once (d) reddish
  11. 11.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) soap solution (c) water (d) a magnet
  12. 12.True or false: a battery cell is not needed for the turmeric test. (a) True (b) False
  13. 13.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) a dropper or spoon (c) a comb (d) turmeric powder
  14. 14.🟡 Which of these turns turmeric reddish-brown? (a) salt water (b) soap solution (c) sugar water (d) vinegar
  15. 15.🟡 Which of these turns turmeric paper reddish-brown? (a) vinegar (b) soap solution (c) lemon juice (d) sugar water
  16. 16.⚖️ 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
  17. 17.🧺 Do we need a balloon for the turmeric test? (a) not needed (b) needed
  18. 18.🛟 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
  19. 19.True or false: vinegar turns turmeric reddish-brown. (a) True (b) False
  20. 20.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) a balloon (c) a dropper or spoon (d) water
  21. 21.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is what we measure. (a) False (b) True
  22. 22.True or false: plain water is an acid. (a) True (b) False
  23. 23.🧺 Do we need soap solution for the turmeric test? (a) needed (b) not needed
  24. 24.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is what we measure. (a) False (b) True
  25. 25.True or false: lemon juice is an acid. (a) False (b) True
  26. 26.🧺 Which of these is needed for the turmeric test? (a) a balloon (b) water (c) a battery cell (d) a mirror
  27. 27.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the light we look in (b) the liquid we test (c) the turmeric paper (d) the colour we see
  28. 28.True or false: vinegar is neutral. (a) True (b) False
  29. 29.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it stays yellow (b) it turns blue (c) reddish-brown (d) it turns green
  30. 30.🟡 Turmeric paper meets sugar water. What happens? (a) turns reddish-brown (b) stays yellow
  31. 31.True or false: baking soda water turns turmeric reddish-brown. (a) True (b) False
  32. 32.True or false: a comb is not needed for the turmeric test. (a) True (b) False
  33. 33.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the number of drops (b) the light we look in (c) the liquid we test (d) the turmeric paper
  34. 34.🧺 Do we need a mirror for the turmeric test? (a) not needed (b) needed
  35. 35.True or false: salt water turns turmeric reddish-brown. (a) True (b) False
  36. 36.🟡 Turmeric paper meets baking soda water. What happens? (a) stays yellow (b) turns reddish-brown
  37. 37.🫧 Which of these is neutral? (a) soap solution (b) tamarind water (c) salt water (d) detergent water
  38. 38.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is the one thing we change. (a) True (b) False
  39. 39.🔍 Which is the odd one out? (a) soap solution (b) baking soda water (c) detergent water (d) lemon juice
  40. 40.True or false: salt water is neutral. (a) True (b) False

Answer key

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

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