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Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 367 · 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: turmeric powder is needed for the turmeric test. (a) False (b) True
  2. 2.True or false: salt water turns turmeric reddish-brown. (a) False (b) True
  3. 3.🔍 Which is the odd one out? (a) vinegar (b) sugar water (c) baking soda water (d) lemon juice
  4. 4.🛟 Which rule keeps the turmeric test safe? (a) mix bathroom cleaners (b) sip each liquid (c) sniff each bottle hard (d) use only kitchen items
  5. 5.🧺 Do we need a balloon for the turmeric test? (a) needed (b) not needed
  6. 6.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) water (c) white paper strips (d) a battery cell
  7. 7.🟡 Which of these turns turmeric paper reddish-brown? (a) vinegar (b) lemon juice (c) soap solution (d) sugar water
  8. 8.True or false: detergent water is a base. (a) True (b) False
  9. 9.True or false: a mirror is needed for the turmeric test. (a) False (b) True
  10. 10.True or false: sugar water turns turmeric reddish-brown. (a) True (b) False
  11. 11.True or false: detergent water keeps turmeric yellow. (a) True (b) False
  12. 12.🟡 Turmeric paper meets salt water. What happens? (a) stays yellow (b) turns reddish-brown
  13. 13.🫧 Is salt water an acid, a base or neutral? (a) an acid (b) a base (c) neutral
  14. 14.🛟 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
  15. 15.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the liquid we test (b) the turmeric paper (c) the number of drops (d) the colour we see
  16. 16.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it turns green (b) reddish-brown (c) it stays yellow (d) it turns blue
  17. 17.🫧 Is baking soda water an acid, a base or neutral? (a) an acid (b) neutral (c) a base
  18. 18.🫧 Is orange juice an acid, a base or neutral? (a) an acid (b) a base (c) neutral
  19. 19.True or false: baking soda water is neutral. (a) False (b) True
  20. 20.True or false: white paper strips is not needed for the turmeric test. (a) True (b) False
  21. 21.True or false: a battery cell is not needed for the turmeric test. (a) False (b) True
  22. 22.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the liquid we test (b) the colour we see (c) the turmeric paper
  23. 23.True or false: detergent water turns turmeric reddish-brown. (a) False (b) True
  24. 24.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) yeast (b) soap solution (c) lemon juice (d) water
  25. 25.🧺 Do we need a dropper or spoon for the turmeric test? (a) not needed (b) needed
  26. 26.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the colour we see”? (a) we measure it (b) we change it (c) we keep it the same
  27. 27.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) bright blue (b) green (c) it stays white (d) reddish-brown
  28. 28.🔮 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
  29. 29.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the light we look in is kept the same. (a) False (b) True
  30. 30.🧺 Do we need white paper strips for the turmeric test? (a) not needed (b) needed
  31. 31.True or false: soap solution turns turmeric reddish-brown. (a) True (b) False
  32. 32.⚖️ 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 light we look in
  33. 33.True or false: a battery cell is needed for the turmeric test. (a) False (b) True
  34. 34.True or false: yeast is needed for the turmeric test. (a) True (b) False
  35. 35.🫧 Is lemon juice an acid, a base or neutral? (a) a base (b) neutral (c) an acid
  36. 36.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) white paper strips (c) water (d) a mirror
  37. 37.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) green (b) reddish (c) bright blue (d) white at once
  38. 38.True or false: vinegar is an acid. (a) False (b) True
  39. 39.🟡 Which of these keeps turmeric yellow? (a) tamarind water (b) detergent water (c) baking soda water (d) soap solution
  40. 40.🟡 Which of these keeps turmeric yellow? (a) detergent water (b) sugar water (c) baking soda water (d) soap solution

Answer key

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

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