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Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 176 · 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.

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

Answer key

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

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