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Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 783 · 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.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) soap solution (c) a magnet (d) turmeric powder
  2. 2.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is what we measure. (a) True (b) False
  3. 3.🫧 Which of these is neutral? (a) orange juice (b) tamarind water (c) vinegar (d) salt water
  4. 4.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) a dropper or spoon (c) yeast (d) water
  5. 5.🛟 Which rule keeps the turmeric test safe? (a) mix bathroom cleaners (b) use only kitchen items (c) sniff each bottle hard (d) sip each liquid
  6. 6.🟡 Turmeric paper meets baking soda water. What happens? (a) turns reddish-brown (b) stays yellow
  7. 7.True or false: plain water is a base. (a) True (b) False
  8. 8.🧺 Do we need a balloon for the turmeric test? (a) not needed (b) needed
  9. 9.🫧 Which of these is a base? (a) plain water (b) detergent water (c) vinegar (d) orange juice
  10. 10.🫧 Is vinegar an acid, a base or neutral? (a) neutral (b) a base (c) an acid
  11. 11.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is kept the same. (a) False (b) True
  12. 12.🟡 Turmeric paper meets detergent water. What happens? (a) turns reddish-brown (b) stays yellow
  13. 13.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the turmeric paper”? (a) we measure it (b) we change it (c) we keep it the same
  14. 14.🧺 Which of these is needed for the turmeric test? (a) a battery cell (b) a comb (c) a magnet (d) soap solution
  15. 15.🟡 Turmeric paper meets plain water. What happens? (a) stays yellow (b) turns reddish-brown
  16. 16.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is kept the same. (a) False (b) True
  17. 17.🧺 Do we need yeast for the turmeric test? (a) needed (b) not needed
  18. 18.⚖️ 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
  19. 19.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) a dropper or spoon (c) a mirror (d) white paper strips
  20. 20.True or false: soap solution is needed for the turmeric test. (a) False (b) True
  21. 21.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns blue (b) it stays yellow (c) it turns red (d) it turns black
  22. 22.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is the one thing we change. (a) True (b) False
  23. 23.🍋 A reddish turmeric spot gets a few drops of lemon juice. What happens? (a) it disappears (b) it turns blue (c) it turns yellow again (d) it turns darker red
  24. 24.🫧 Is sugar water an acid, a base or neutral? (a) a base (b) an acid (c) neutral
  25. 25.🫧 Which of these is neutral? (a) orange juice (b) detergent water (c) soap solution (d) sugar water
  26. 26.True or false: curd is a base. (a) True (b) False
  27. 27.🔍 Which is the odd one out? (a) sugar water (b) baking soda water (c) salt water (d) plain water
  28. 28.🍋 A drop of lemon juice falls on turmeric paper. What happens? (a) it turns black (b) it stays yellow (c) it turns blue (d) it turns red
  29. 29.🟡 Which of these keeps turmeric yellow? (a) baking soda water (b) tamarind water (c) detergent water (d) soap solution
  30. 30.🫧 Which of these is a base? (a) plain water (b) sugar water (c) vinegar (d) soap solution
  31. 31.🫧 Is tamarind water an acid, a base or neutral? (a) a base (b) an acid (c) neutral
  32. 32.🫧 Which of these is neutral? (a) vinegar (b) soap solution (c) plain water (d) lemon juice
  33. 33.🛟 Turmeric stains clothes. What should you wear? (a) your school uniform (b) a white party dress (c) your best clothes (d) an old shirt or apron
  34. 34.🧺 Do we need lemon juice for the turmeric test? (a) not needed (b) needed
  35. 35.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) green (b) reddish-brown (c) it stays white (d) bright blue
  36. 36.🟡 Which of these turns turmeric paper reddish-brown? (a) vinegar (b) soap solution (c) lemon juice (d) sugar water
  37. 37.True or false: curd is neutral. (a) True (b) False
  38. 38.🔍 Which is the odd one out? (a) soap solution (b) salt water (c) detergent water (d) baking soda water
  39. 39.🟡 Which of these turns turmeric reddish-brown? (a) baking soda water (b) sugar water (c) plain water (d) salt water
  40. 40.🟡 Which of these turns turmeric reddish-brown? (a) tamarind water (b) soap solution (c) sugar water (d) plain water

Answer key

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

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