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Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 181 · 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.True or false: a dropper or spoon is not needed for the turmeric test. (a) False (b) True
  2. 2.🧺 Which of these is not needed for the turmeric test? (a) soap solution (b) white paper strips (c) a comb (d) turmeric powder
  3. 3.True or false: soap solution keeps turmeric yellow. (a) True (b) False
  4. 4.True or false: lemon juice is a base. (a) True (b) False
  5. 5.🟡 Which of these keeps turmeric yellow? (a) soap solution (b) baking soda water (c) detergent water (d) sugar water
  6. 6.🟡 Why does soap solution change turmeric’s colour? (a) soap is an acid (b) soap is magnetic (c) soap water is a base (d) soap is hot
  7. 7.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) reddish-brown (b) it turns green (c) it turns blue (d) it stays yellow
  8. 8.🟡 Turmeric paper meets vinegar. What happens? (a) turns reddish-brown (b) stays yellow
  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) True (b) False
  10. 10.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is kept the same. (a) True (b) False
  11. 11.🧺 Do we need a balloon for the turmeric test? (a) needed (b) not needed
  12. 12.⚖️ 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
  13. 13.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) a battery cell (c) soap solution (d) turmeric powder
  14. 14.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns blue (b) it turns red (c) it turns black (d) it stays yellow
  15. 15.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a balloon (b) soap solution (c) lemon juice (d) water
  16. 16.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is what we measure. (a) False (b) True
  17. 17.🫧 Is plain water an acid, a base or neutral? (a) a base (b) an acid (c) neutral
  18. 18.True or false: detergent water keeps turmeric yellow. (a) False (b) True
  19. 19.True or false: lemon juice is needed for the turmeric test. (a) True (b) False
  20. 20.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the colour we see”? (a) we change it (b) we measure it (c) we keep it the same
  21. 21.True or false: a comb is needed for the turmeric test. (a) True (b) False
  22. 22.True or false: plain water keeps turmeric yellow. (a) False (b) True
  23. 23.🔍 Which is the odd one out? (a) salt water (b) plain water (c) sugar water (d) detergent water
  24. 24.🟡 Turmeric paper meets tamarind water. What happens? (a) stays yellow (b) turns reddish-brown
  25. 25.True or false: vinegar keeps turmeric yellow. (a) False (b) True
  26. 26.🧺 Do we need a comb for the turmeric test? (a) not needed (b) needed
  27. 27.🟡 Turmeric paper meets soap solution. What happens? (a) stays yellow (b) turns reddish-brown
  28. 28.🛟 Which rule keeps the turmeric test safe? (a) mix bathroom cleaners (b) sniff each bottle hard (c) use only kitchen items (d) sip each liquid
  29. 29.🫧 Is sugar water an acid, a base or neutral? (a) an acid (b) a base (c) neutral
  30. 30.🟡 Turmeric paper meets plain water. What happens? (a) stays yellow (b) turns reddish-brown
  31. 31.🟡 Which of these turns turmeric paper reddish-brown? (a) lemon juice (b) vinegar (c) soap solution (d) sugar water
  32. 32.🧺 Do we need white paper strips for the turmeric test? (a) needed (b) not needed
  33. 33.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the turmeric paper”? (a) we change it (b) we measure it (c) we keep it the same
  34. 34.🔍 Which is the odd one out? (a) baking soda water (b) salt water (c) soap solution (d) detergent water
  35. 35.True or false: a balloon is not needed for the turmeric test. (a) False (b) True
  36. 36.True or false: detergent water is a base. (a) False (b) True
  37. 37.🟡 Which of these keeps turmeric yellow? (a) detergent water (b) lemon juice (c) baking soda water (d) soap solution
  38. 38.🫧 Which of these is an acid? (a) tamarind water (b) detergent water (c) salt water (d) sugar water
  39. 39.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) reddish-brown (b) it stays white (c) bright blue (d) green
  40. 40.🧺 Which of these is needed for the turmeric test? (a) soap solution (b) a mirror (c) a magnet (d) a balloon

Answer key

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

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