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Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 764 · 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.🫧 Is lemon juice an acid, a base or neutral? (a) a base (b) neutral (c) an acid
  2. 2.🧺 Which of these is needed for the turmeric test? (a) a comb (b) water (c) yeast (d) a battery cell
  3. 3.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it turns green (b) reddish-brown (c) it turns blue (d) it stays yellow
  4. 4.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) water (c) turmeric powder (d) yeast
  5. 5.True or false: detergent water is an acid. (a) True (b) False
  6. 6.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a comb (b) soap solution (c) turmeric powder (d) a dropper or spoon
  7. 7.🧺 Which of these is needed for the turmeric test? (a) a magnet (b) a comb (c) lemon juice (d) a balloon
  8. 8.🧺 Do we need a comb for the turmeric test? (a) not needed (b) needed
  9. 9.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the colour we see (b) the liquid we test (c) the number of drops
  10. 10.🧺 Which of these is not needed for the turmeric test? (a) lemon juice (b) a dropper or spoon (c) a battery cell (d) soap solution
  11. 11.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns blue (b) it turns black (c) it stays yellow (d) it turns red
  12. 12.🟡 Which of these keeps turmeric yellow? (a) detergent water (b) soap solution (c) sugar water (d) baking soda water
  13. 13.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the liquid we test”? (a) we measure it (b) we change it (c) we keep it the same
  14. 14.True or false: detergent water keeps turmeric yellow. (a) True (b) False
  15. 15.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) turmeric powder (c) a mirror (d) white paper strips
  16. 16.True or false: tamarind water turns turmeric reddish-brown. (a) False (b) True
  17. 17.🛟 Which rule keeps the turmeric test safe? (a) sniff each bottle hard (b) mix bathroom cleaners (c) sip each liquid (d) use only kitchen items
  18. 18.🔍 Which is the odd one out? (a) baking soda water (b) detergent water (c) soap solution (d) vinegar
  19. 19.🟡 Which of these turns turmeric paper reddish-brown? (a) vinegar (b) soap solution (c) sugar water (d) lemon juice
  20. 20.🟡 Turmeric paper meets sugar water. What happens? (a) stays yellow (b) turns reddish-brown
  21. 21.True or false: soap solution is not needed for the turmeric test. (a) False (b) True
  22. 22.🔍 Which is the odd one out? (a) tamarind water (b) soap solution (c) lemon juice (d) salt water
  23. 23.🔍 Which is the odd one out? (a) salt water (b) lemon juice (c) plain water (d) baking soda water
  24. 24.🧺 Which of these is needed for the turmeric test? (a) a magnet (b) a balloon (c) a mirror (d) turmeric powder
  25. 25.🧺 Do we need lemon juice for the turmeric test? (a) needed (b) not needed
  26. 26.🧺 Do we need a balloon for the turmeric test? (a) not needed (b) needed
  27. 27.True or false: plain water is an acid. (a) True (b) False
  28. 28.True or false: white paper strips is needed for the turmeric test. (a) True (b) False
  29. 29.🫧 Is soap solution an acid, a base or neutral? (a) neutral (b) an acid (c) a base
  30. 30.🟡 Turmeric paper meets baking soda water. What happens? (a) turns reddish-brown (b) stays yellow
  31. 31.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is what we measure. (a) True (b) False
  32. 32.🫧 Which of these is an acid? (a) orange juice (b) salt water (c) baking soda water (d) soap solution
  33. 33.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a magnet (b) soap solution (c) turmeric powder (d) white paper strips
  34. 34.🫧 Is tamarind water an acid, a base or neutral? (a) a base (b) an acid (c) neutral
  35. 35.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) reddish-brown (b) it stays white (c) bright blue (d) green
  36. 36.True or false: salt water keeps turmeric yellow. (a) True (b) False
  37. 37.True or false: detergent water is neutral. (a) False (b) True
  38. 38.True or false: sugar water keeps turmeric yellow. (a) False (b) True
  39. 39.True or false: water is needed for the turmeric test. (a) True (b) False
  40. 40.🟡 Turmeric paper meets soap solution. What happens? (a) turns reddish-brown (b) stays yellow

Answer key

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

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