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Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 607 · 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.🟡 Turmeric paper meets salt water. What happens? (a) stays yellow (b) turns reddish-brown
  2. 2.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a comb (b) white paper strips (c) lemon juice (d) a dropper or spoon
  3. 3.🧺 Do we need soap solution for the turmeric test? (a) not needed (b) needed
  4. 4.🟡 Turmeric paper meets plain water. What happens? (a) turns reddish-brown (b) stays yellow
  5. 5.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is the one thing we change. (a) False (b) True
  6. 6.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it turns blue (b) it stays yellow (c) it turns green (d) reddish-brown
  7. 7.🔍 Which is the odd one out? (a) soap solution (b) plain water (c) baking soda water (d) detergent water
  8. 8.🫧 Is curd an acid, a base or neutral? (a) neutral (b) a base (c) an acid
  9. 9.⚖️ 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 measure it (c) we change it
  10. 10.🧺 Which of these is not needed for the turmeric test? (a) a dropper or spoon (b) soap solution (c) turmeric powder (d) a mirror
  11. 11.True or false: soap solution is not needed for the turmeric test. (a) True (b) False
  12. 12.True or false: sugar water is a base. (a) True (b) False
  13. 13.🧺 Do we need yeast for the turmeric test? (a) needed (b) not needed
  14. 14.True or false: turmeric powder is not needed for the turmeric test. (a) True (b) False
  15. 15.🫧 Which of these is an acid? (a) sugar water (b) vinegar (c) soap solution (d) baking soda water
  16. 16.🟡 Turmeric paper meets baking soda water. What happens? (a) stays yellow (b) turns reddish-brown
  17. 17.🟡 Which of these keeps turmeric yellow? (a) baking soda water (b) salt water (c) detergent water (d) soap solution
  18. 18.🫧 Which of these is an acid? (a) soap solution (b) salt water (c) sugar water (d) tamarind water
  19. 19.🟡 Which of these turns turmeric reddish-brown? (a) lemon juice (b) plain water (c) vinegar (d) baking soda water
  20. 20.🧺 Do we need a battery cell for the turmeric test? (a) not needed (b) needed
  21. 21.True or false: yeast is not needed for the turmeric test. (a) False (b) True
  22. 22.🔍 Which is the odd one out? (a) detergent water (b) baking soda water (c) sugar water (d) soap solution
  23. 23.🫧 Which of these is a base? (a) tamarind water (b) detergent water (c) curd (d) salt water
  24. 24.🔍 Which is the odd one out? (a) soap solution (b) detergent water (c) baking soda water (d) lemon juice
  25. 25.⚖️ 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 liquid we test (c) the light we look in (d) the turmeric paper
  26. 26.🧺 Do we need a dropper or spoon for the turmeric test? (a) not needed (b) needed
  27. 27.🫧 Which of these is an acid? (a) sugar water (b) orange juice (c) soap solution (d) salt water
  28. 28.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is the one thing we change. (a) True (b) False
  29. 29.🛟 Turmeric stains clothes. What should you wear? (a) an old shirt or apron (b) your best clothes (c) a white party dress (d) your school uniform
  30. 30.🍋 A reddish turmeric spot gets a few drops of lemon juice. What happens? (a) it turns blue (b) it turns darker red (c) it disappears (d) it turns yellow again
  31. 31.🛟 Which rule keeps the turmeric test safe? (a) sniff each bottle hard (b) sip each liquid (c) mix bathroom cleaners (d) use only kitchen items
  32. 32.🟡 Which of these keeps turmeric yellow? (a) baking soda water (b) detergent water (c) soap solution (d) sugar water
  33. 33.🧺 Do we need lemon juice for the turmeric test? (a) needed (b) not needed
  34. 34.🧺 Which of these is needed for the turmeric test? (a) a mirror (b) white paper strips (c) a magnet (d) yeast
  35. 35.🧺 Which of these is needed for the turmeric test? (a) lemon juice (b) a balloon (c) a comb (d) a magnet
  36. 36.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns red (b) it turns blue (c) it turns black (d) it stays yellow
  37. 37.🧺 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 magnet
  38. 38.🫧 Is tamarind water an acid, a base or neutral? (a) neutral (b) an acid (c) a base
  39. 39.🟡 Turmeric paper meets tamarind water. What happens? (a) turns reddish-brown (b) stays yellow
  40. 40.🟡 Which of these turns turmeric paper reddish-brown? (a) vinegar (b) sugar water (c) soap solution (d) lemon juice

Answer key

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

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