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Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 354 · 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.

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

Answer key

  1. a magnet
  2. the number of drops
  3. True
  4. False
  5. a base
  6. True
  7. we keep it the same
  8. False
  9. an acid
  10. not needed
  11. not needed
  12. True
  13. salt water
  14. it stays yellow
  15. vinegar
  16. True
  17. a magnet
  18. detergent water
  19. True
  20. an acid
  21. stays yellow
  22. reddish-brown
  23. turns reddish-brown
  24. True
  25. the liquid we test
  26. vinegar
  27. True
  28. tamarind water
  29. we keep it the same
  30. an indicator
  31. vinegar
  32. True
  33. detergent water
  34. soap solution
  35. a comb
  36. we change it
  37. plain water
  38. not needed
  39. the turmeric paper
  40. turmeric powder

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