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Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 862 · 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) a magnet (b) white paper strips (c) water (d) turmeric powder
  2. 2.True or false: vinegar is an acid. (a) True (b) False
  3. 3.🛟 Turmeric stains clothes. What should you wear? (a) your best clothes (b) your school uniform (c) an old shirt or apron (d) a white party dress
  4. 4.🫧 Is soap solution an acid, a base or neutral? (a) neutral (b) an acid (c) a base
  5. 5.🫧 Is salt water an acid, a base or neutral? (a) neutral (b) an acid (c) a base
  6. 6.🧺 Which of these is not needed for the turmeric test? (a) a mirror (b) turmeric powder (c) lemon juice (d) a dropper or spoon
  7. 7.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the turmeric paper (b) the colour we see (c) the liquid we test
  8. 8.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns red (b) it turns blue (c) it stays yellow (d) it turns black
  9. 9.🧺 Do we need a magnet for the turmeric test? (a) needed (b) not needed
  10. 10.True or false: a magnet is not needed for the turmeric test. (a) True (b) False
  11. 11.🔍 Which is the odd one out? (a) soap solution (b) vinegar (c) lemon juice (d) sugar water
  12. 12.🫧 Is vinegar an acid, a base or neutral? (a) neutral (b) a base (c) an acid
  13. 13.🫧 Which of these is an acid? (a) soap solution (b) lemon juice (c) baking soda water (d) plain water
  14. 14.🧺 Which of these is not needed for the turmeric test? (a) turmeric powder (b) a dropper or spoon (c) white paper strips (d) a battery cell
  15. 15.True or false: white paper strips is not needed for the turmeric test. (a) False (b) True
  16. 16.🟡 Turmeric paper meets plain water. What happens? (a) stays yellow (b) turns reddish-brown
  17. 17.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a balloon (b) turmeric powder (c) soap solution (d) a dropper or spoon
  18. 18.🟡 Turmeric paper meets sugar water. What happens? (a) turns reddish-brown (b) stays yellow
  19. 19.🟡 Which of these turns turmeric reddish-brown? (a) salt water (b) detergent water (c) tamarind water (d) plain water
  20. 20.🛟 Which rule keeps the turmeric test safe? (a) sip each liquid (b) mix bathroom cleaners (c) use only kitchen items (d) sniff each bottle hard
  21. 21.🫧 Which of these is neutral? (a) curd (b) soap solution (c) lemon juice (d) sugar water
  22. 22.🧺 Do we need turmeric powder for the turmeric test? (a) needed (b) not needed
  23. 23.🟡 Turmeric paper meets vinegar. What happens? (a) turns reddish-brown (b) stays yellow
  24. 24.🔍 Which is the odd one out? (a) baking soda water (b) tamarind water (c) vinegar (d) salt water
  25. 25.True or false: salt water keeps turmeric yellow. (a) True (b) False
  26. 26.⚖️ 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
  27. 27.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a mirror (b) lemon juice (c) white paper strips (d) turmeric powder
  28. 28.True or false: soap solution is a base. (a) False (b) True
  29. 29.True or false: plain water turns turmeric reddish-brown. (a) True (b) False
  30. 30.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it turns blue (b) it turns green (c) it stays yellow (d) reddish-brown
  31. 31.⚖️ 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
  32. 32.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the number of drops”? (a) we change it (b) we keep it the same (c) we measure it
  33. 33.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is kept the same. (a) True (b) False
  34. 34.🟡 Turmeric paper meets baking soda water. What happens? (a) stays yellow (b) turns reddish-brown
  35. 35.🟡 Which of these keeps turmeric yellow? (a) detergent water (b) baking soda water (c) salt water (d) soap solution
  36. 36.🟡 Which of these turns turmeric reddish-brown? (a) tamarind water (b) soap solution (c) sugar water (d) plain water
  37. 37.🧺 Which of these is not needed for the turmeric test? (a) a magnet (b) water (c) turmeric powder (d) soap solution
  38. 38.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is what we measure. (a) True (b) False
  39. 39.True or false: orange juice is an acid. (a) True (b) False
  40. 40.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is kept the same. (a) False (b) True

Answer key

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

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