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Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 373 · 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) turmeric powder (b) soap solution (c) a dropper or spoon (d) a balloon
  2. 2.🔍 Which is the odd one out? (a) detergent water (b) baking soda water (c) soap solution (d) tamarind water
  3. 3.🫧 Is tamarind water an acid, a base or neutral? (a) neutral (b) an acid (c) a base
  4. 4.🛟 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
  5. 5.🧺 Which of these is needed for the turmeric test? (a) a magnet (b) a balloon (c) white paper strips (d) a mirror
  6. 6.🫧 Which of these is a base? (a) detergent water (b) sugar water (c) orange juice (d) vinegar
  7. 7.🫧 Which of these is a base? (a) sugar water (b) vinegar (c) soap solution (d) curd
  8. 8.True or false: curd is an acid. (a) True (b) False
  9. 9.⚖️ 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
  10. 10.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the colour we see”? (a) we change it (b) we keep it the same (c) we measure it
  11. 11.True or false: soap solution keeps turmeric yellow. (a) False (b) True
  12. 12.🟡 Turmeric paper meets baking soda water. What happens? (a) stays yellow (b) turns reddish-brown
  13. 13.🫧 Which of these is a base? (a) baking soda water (b) lemon juice (c) salt water (d) vinegar
  14. 14.🛟 Which rule keeps the turmeric test safe? (a) sniff each bottle hard (b) use only kitchen items (c) sip each liquid (d) mix bathroom cleaners
  15. 15.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns black (b) it stays yellow (c) it turns red (d) it turns blue
  16. 16.🧺 Do we need a magnet for the turmeric test? (a) not needed (b) needed
  17. 17.🔍 Which is the odd one out? (a) lemon juice (b) soap solution (c) detergent water (d) baking soda water
  18. 18.🔍 Which is the odd one out? (a) detergent water (b) soap solution (c) baking soda water (d) sugar water
  19. 19.True or false: sugar water turns turmeric reddish-brown. (a) True (b) False
  20. 20.True or false: tamarind water is a base. (a) True (b) False
  21. 21.True or false: white paper strips is needed for the turmeric test. (a) True (b) False
  22. 22.🧺 Do we need turmeric powder for the turmeric test? (a) not needed (b) needed
  23. 23.True or false: a dropper or spoon is not needed for the turmeric test. (a) False (b) True
  24. 24.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) soap solution (c) a mirror (d) water
  25. 25.🟡 Which of these turns turmeric reddish-brown? (a) detergent water (b) plain water (c) tamarind water (d) salt water
  26. 26.⚖️ 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 light we look in (c) the liquid we test (d) the turmeric paper
  27. 27.🟡 Turmeric paper meets salt water. What happens? (a) turns reddish-brown (b) stays yellow
  28. 28.🟡 Why does soap solution change turmeric’s colour? (a) soap is hot (b) soap is magnetic (c) soap is an acid (d) soap water is a base
  29. 29.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) turmeric powder (c) a dropper or spoon (d) yeast
  30. 30.True or false: orange juice is a base. (a) True (b) False
  31. 31.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) bright blue (b) green (c) reddish (d) white at once
  32. 32.True or false: a comb is needed for the turmeric test. (a) True (b) False
  33. 33.🫧 Is sugar water an acid, a base or neutral? (a) neutral (b) a base (c) an acid
  34. 34.🟡 Which of these turns turmeric reddish-brown? (a) lemon juice (b) vinegar (c) baking soda water (d) salt water
  35. 35.🟡 Turmeric paper meets tamarind water. What happens? (a) turns reddish-brown (b) stays yellow
  36. 36.True or false: turmeric powder is not needed for the turmeric test. (a) False (b) True
  37. 37.True or false: orange juice is an acid. (a) False (b) True
  38. 38.True or false: detergent water is an acid. (a) True (b) False
  39. 39.🟡 Which of these keeps turmeric yellow? (a) salt water (b) soap solution (c) detergent water (d) baking soda water
  40. 40.🟡 Turmeric paper meets soap solution. What happens? (a) turns reddish-brown (b) stays yellow

Answer key

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

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