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Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 548 · 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.True or false: plain water turns turmeric reddish-brown. (a) True (b) False
  2. 2.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the liquid we test”? (a) we keep it the same (b) we measure it (c) we change it
  3. 3.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns red (b) it turns black (c) it stays yellow (d) it turns blue
  4. 4.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the light we look in”? (a) we change it (b) we measure it (c) we keep it the same
  5. 5.True or false: water is not needed for the turmeric test. (a) True (b) False
  6. 6.True or false: white paper strips is not needed for the turmeric test. (a) True (b) False
  7. 7.True or false: water is needed for the turmeric test. (a) False (b) True
  8. 8.True or false: a comb is needed for the turmeric test. (a) True (b) False
  9. 9.True or false: a comb is not needed for the turmeric test. (a) True (b) False
  10. 10.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) a balloon (c) a dropper or spoon (d) lemon juice
  11. 11.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) turmeric powder (c) a magnet (d) water
  12. 12.🛟 Which rule keeps the turmeric test safe? (a) sip each liquid (b) use only kitchen items (c) sniff each bottle hard (d) mix bathroom cleaners
  13. 13.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is the one thing we change. (a) False (b) True
  14. 14.🧺 Which of these is not needed for the turmeric test? (a) lemon juice (b) a dropper or spoon (c) a comb (d) soap solution
  15. 15.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it stays yellow (b) reddish-brown (c) it turns blue (d) it turns green
  16. 16.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) white at once (b) green (c) bright blue (d) reddish
  17. 17.True or false: soap solution is not needed for the turmeric test. (a) True (b) False
  18. 18.🧺 Do we need water for the turmeric test? (a) not needed (b) needed
  19. 19.🟡 Which of these keeps turmeric yellow? (a) salt water (b) baking soda water (c) detergent water (d) soap solution
  20. 20.True or false: lemon juice is not needed for the turmeric test. (a) False (b) True
  21. 21.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the number of drops”? (a) we measure it (b) we change it (c) we keep it the same
  22. 22.🧺 Do we need a battery cell for the turmeric test? (a) needed (b) not needed
  23. 23.🧺 Which of these is not needed for the turmeric test? (a) a dropper or spoon (b) yeast (c) lemon juice (d) white paper strips
  24. 24.🫧 Which of these is a base? (a) plain water (b) salt water (c) sugar water (d) detergent water
  25. 25.True or false: sugar water is neutral. (a) True (b) False
  26. 26.True or false: lemon juice keeps turmeric yellow. (a) True (b) False
  27. 27.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is kept the same. (a) False (b) True
  28. 28.🟡 Turmeric paper meets detergent water. What happens? (a) stays yellow (b) turns reddish-brown
  29. 29.🧺 Do we need a balloon for the turmeric test? (a) not needed (b) needed
  30. 30.🛟 Turmeric stains clothes. What should you wear? (a) a white party dress (b) your school uniform (c) your best clothes (d) an old shirt or apron
  31. 31.🔍 Which is the odd one out? (a) detergent water (b) lemon juice (c) tamarind water (d) sugar water
  32. 32.True or false: tamarind water turns turmeric reddish-brown. (a) True (b) False
  33. 33.True or false: lemon juice is needed for the turmeric test. (a) False (b) True
  34. 34.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is what we measure. (a) False (b) True
  35. 35.🫧 Is sugar water an acid, a base or neutral? (a) an acid (b) neutral (c) a base
  36. 36.🟡 Turmeric paper meets salt water. What happens? (a) stays yellow (b) turns reddish-brown
  37. 37.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is what we measure. (a) True (b) False
  38. 38.True or false: plain water is an acid. (a) False (b) True
  39. 39.🟡 Which of these turns turmeric reddish-brown? (a) soap solution (b) vinegar (c) sugar water (d) salt water
  40. 40.🟡 Turmeric paper meets sugar water. What happens? (a) turns reddish-brown (b) stays yellow

Answer key

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

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