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Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 618 · 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.⚖️ 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 colour we see
  2. 2.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) reddish-brown (b) it turns green (c) it stays yellow (d) it turns blue
  3. 3.🧺 Which of these is not needed for the turmeric test? (a) soap solution (b) turmeric powder (c) a mirror (d) a dropper or spoon
  4. 4.🧺 Which of these is needed for the turmeric test? (a) a balloon (b) a magnet (c) lemon juice (d) yeast
  5. 5.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the number of drops”? (a) we measure it (b) we keep it the same (c) we change it
  6. 6.🟡 Which of these turns turmeric reddish-brown? (a) salt water (b) vinegar (c) baking soda water (d) lemon juice
  7. 7.True or false: turmeric powder is needed for the turmeric test. (a) False (b) True
  8. 8.🧺 Which of these is needed for the turmeric test? (a) a battery cell (b) yeast (c) a balloon (d) turmeric powder
  9. 9.🫧 Which of these is neutral? (a) soap solution (b) lemon juice (c) orange juice (d) plain water
  10. 10.🟡 Which of these turns turmeric reddish-brown? (a) salt water (b) sugar water (c) lemon juice (d) detergent water
  11. 11.True or false: tamarind water is a base. (a) True (b) False
  12. 12.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the light we look in (b) the turmeric paper (c) the number of drops (d) the colour we see
  13. 13.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) a comb (c) turmeric powder (d) soap solution
  14. 14.🫧 Is salt water an acid, a base or neutral? (a) a base (b) an acid (c) neutral
  15. 15.🟡 Which of these turns turmeric reddish-brown? (a) lemon juice (b) vinegar (c) soap solution (d) tamarind water
  16. 16.🔍 Which is the odd one out? (a) detergent water (b) salt water (c) soap solution (d) baking soda water
  17. 17.True or false: lemon juice turns turmeric reddish-brown. (a) False (b) True
  18. 18.🫧 Is sugar water an acid, a base or neutral? (a) an acid (b) neutral (c) a base
  19. 19.True or false: a balloon is not needed for the turmeric test. (a) False (b) True
  20. 20.True or false: plain water is neutral. (a) False (b) True
  21. 21.🔍 Which is the odd one out? (a) tamarind water (b) baking soda water (c) soap solution (d) detergent water
  22. 22.📘 What do we call something that changes colour to show an acid or a base? (a) a magnet (b) a prism (c) an indicator (d) a pulley
  23. 23.🫧 Which of these is an acid? (a) plain water (b) soap solution (c) curd (d) baking soda water
  24. 24.🔍 Which is the odd one out? (a) sugar water (b) detergent water (c) baking soda water (d) soap solution
  25. 25.🟡 Which of these keeps turmeric yellow? (a) baking soda water (b) detergent water (c) tamarind water (d) soap solution
  26. 26.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the turmeric paper (b) the liquid we test (c) the colour we see
  27. 27.🔍 Which is the odd one out? (a) soap solution (b) detergent water (c) baking soda water (d) lemon juice
  28. 28.🧺 Do we need turmeric powder for the turmeric test? (a) needed (b) not needed
  29. 29.🛟 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
  30. 30.🧺 Which of these is needed for the turmeric test? (a) a mirror (b) soap solution (c) a comb (d) a magnet
  31. 31.🛟 Turmeric stains clothes. What should you wear? (a) an old shirt or apron (b) a white party dress (c) your school uniform (d) your best clothes
  32. 32.True or false: water is not needed for the turmeric test. (a) True (b) False
  33. 33.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is kept the same. (a) False (b) True
  34. 34.🫧 Is vinegar an acid, a base or neutral? (a) a base (b) neutral (c) an acid
  35. 35.True or false: plain water turns turmeric reddish-brown. (a) False (b) True
  36. 36.🟡 Which of these keeps turmeric yellow? (a) baking soda water (b) detergent water (c) plain water (d) soap solution
  37. 37.🧺 Do we need water for the turmeric test? (a) needed (b) not needed
  38. 38.True or false: curd is a base. (a) True (b) False
  39. 39.True or false: white paper strips is needed for the turmeric test. (a) False (b) True
  40. 40.🫧 Which of these is a base? (a) plain water (b) sugar water (c) salt water (d) baking soda water

Answer key

  1. the liquid we test
  2. reddish-brown
  3. a mirror
  4. lemon juice
  5. we keep it the same
  6. baking soda water
  7. True
  8. turmeric powder
  9. plain water
  10. detergent water
  11. False
  12. the colour we see
  13. a comb
  14. neutral
  15. soap solution
  16. salt water
  17. False
  18. neutral
  19. True
  20. True
  21. tamarind water
  22. an indicator
  23. curd
  24. sugar water
  25. tamarind water
  26. the turmeric paper
  27. lemon juice
  28. needed
  29. use only kitchen items
  30. soap solution
  31. an old shirt or apron
  32. False
  33. False
  34. an acid
  35. False
  36. plain water
  37. needed
  38. False
  39. True
  40. baking soda water

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