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Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 661 · 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.🛟 Turmeric stains clothes. What should you wear? (a) your best clothes (b) your school uniform (c) a white party dress (d) an old shirt or apron
  2. 2.🛟 Which rule keeps the turmeric test safe? (a) mix bathroom cleaners (b) sniff each bottle hard (c) sip each liquid (d) use only kitchen items
  3. 3.🧺 Which of these is not needed for the turmeric test? (a) soap solution (b) yeast (c) lemon juice (d) white paper strips
  4. 4.🔍 Which is the odd one out? (a) vinegar (b) lemon juice (c) sugar water (d) baking soda water
  5. 5.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the colour we see (b) the liquid we test (c) the number of drops (d) the light we look in
  6. 6.🟡 Which of these turns turmeric paper reddish-brown? (a) sugar water (b) soap solution (c) vinegar (d) lemon juice
  7. 7.⚖️ 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
  8. 8.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the colour we see (b) the liquid we test (c) the number of drops
  9. 9.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is the one thing we change. (a) False (b) True
  10. 10.🧺 Do we need turmeric powder for the turmeric test? (a) not needed (b) needed
  11. 11.🔍 Which is the odd one out? (a) baking soda water (b) lemon juice (c) detergent water (d) soap solution
  12. 12.True or false: a dropper or spoon is needed for the turmeric test. (a) False (b) True
  13. 13.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is what we measure. (a) False (b) True
  14. 14.🟡 Turmeric paper meets soap solution. What happens? (a) turns reddish-brown (b) stays yellow
  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 change it (c) we measure it
  16. 16.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is what we measure. (a) True (b) False
  17. 17.True or false: soap solution is needed for the turmeric test. (a) False (b) True
  18. 18.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) turmeric powder (c) lemon juice (d) a balloon
  19. 19.🧺 Do we need a comb for the turmeric test? (a) needed (b) not needed
  20. 20.🫧 Which of these is an acid? (a) tamarind water (b) baking soda water (c) detergent water (d) plain water
  21. 21.🧺 Which of these is needed for the turmeric test? (a) a mirror (b) white paper strips (c) a magnet (d) yeast
  22. 22.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the colour we see (b) the turmeric paper (c) the number of drops (d) the liquid we test
  23. 23.True or false: water is needed for the turmeric test. (a) False (b) True
  24. 24.🧺 Which of these is needed for the turmeric test? (a) a balloon (b) a battery cell (c) turmeric powder (d) a mirror
  25. 25.True or false: vinegar is a base. (a) True (b) False
  26. 26.🟡 Turmeric paper meets detergent water. What happens? (a) turns reddish-brown (b) stays yellow
  27. 27.True or false: lemon juice is a base. (a) True (b) False
  28. 28.🔍 Which is the odd one out? (a) lemon juice (b) vinegar (c) soap solution (d) sugar water
  29. 29.True or false: soap solution is neutral. (a) False (b) True
  30. 30.🧺 Do we need soap solution for the turmeric test? (a) not needed (b) needed
  31. 31.🫧 Is tamarind water an acid, a base or neutral? (a) an acid (b) a base (c) neutral
  32. 32.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns black (b) it turns red (c) it turns blue (d) it stays yellow
  33. 33.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is kept the same. (a) True (b) False
  34. 34.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the liquid we test”? (a) we change it (b) we keep it the same (c) we measure it
  35. 35.🫧 Is baking soda water an acid, a base or neutral? (a) an acid (b) neutral (c) a base
  36. 36.True or false: baking soda water keeps turmeric yellow. (a) True (b) False
  37. 37.True or false: plain water is neutral. (a) False (b) True
  38. 38.🫧 Which of these is neutral? (a) baking soda water (b) tamarind water (c) vinegar (d) sugar water
  39. 39.True or false: sugar water is neutral. (a) False (b) True
  40. 40.🧺 Which of these is not needed for the turmeric test? (a) turmeric powder (b) a mirror (c) white paper strips (d) lemon juice

Answer key

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

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