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Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 489 · 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.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it stays yellow (b) it turns blue (c) it turns red (d) it turns black
  2. 2.True or false: a dropper or spoon is needed for the turmeric test. (a) False (b) True
  3. 3.🛟 Which rule keeps the turmeric test safe? (a) sip each liquid (b) sniff each bottle hard (c) mix bathroom cleaners (d) use only kitchen items
  4. 4.🧺 Do we need a balloon for the turmeric test? (a) needed (b) not needed
  5. 5.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a dropper or spoon (b) soap solution (c) a mirror (d) water
  6. 6.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the light we look in”? (a) we measure it (b) we keep it the same (c) we change it
  7. 7.True or false: a magnet is not needed for the turmeric test. (a) True (b) False
  8. 8.True or false: salt water keeps turmeric yellow. (a) True (b) False
  9. 9.🟡 Turmeric paper meets soap solution. What happens? (a) stays yellow (b) turns reddish-brown
  10. 10.🧺 Do we need water for the turmeric test? (a) needed (b) not needed
  11. 11.🟡 Turmeric paper meets baking soda water. What happens? (a) turns reddish-brown (b) stays yellow
  12. 12.🧺 Which of these is needed for the turmeric test? (a) a mirror (b) a balloon (c) a battery cell (d) turmeric powder
  13. 13.🧺 Which of these is needed for the turmeric test? (a) a magnet (b) soap solution (c) a battery cell (d) a mirror
  14. 14.🔍 Which is the odd one out? (a) vinegar (b) sugar water (c) baking soda water (d) plain water
  15. 15.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the liquid we test (b) the turmeric paper (c) the colour we see
  16. 16.⚖️ 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 measure it (c) we change it
  17. 17.🫧 Is curd an acid, a base or neutral? (a) a base (b) an acid (c) neutral
  18. 18.🟡 Which of these turns turmeric reddish-brown? (a) tamarind water (b) vinegar (c) lemon juice (d) baking soda water
  19. 19.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is what we measure. (a) True (b) False
  20. 20.🟡 Turmeric paper meets tamarind water. What happens? (a) turns reddish-brown (b) stays yellow
  21. 21.🟡 Turmeric paper meets detergent water. What happens? (a) stays yellow (b) turns reddish-brown
  22. 22.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is the one thing we change. (a) False (b) True
  23. 23.True or false: orange juice is neutral. (a) False (b) True
  24. 24.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the light we look in (b) the liquid we test (c) the number of drops (d) the colour we see
  25. 25.🔍 Which is the odd one out? (a) baking soda water (b) detergent water (c) soap solution (d) salt water
  26. 26.🔍 Which is the odd one out? (a) plain water (b) soap solution (c) sugar water (d) lemon juice
  27. 27.True or false: a magnet is needed for the turmeric test. (a) True (b) False
  28. 28.True or false: a balloon is needed for the turmeric test. (a) False (b) True
  29. 29.🫧 Is tamarind water an acid, a base or neutral? (a) an acid (b) neutral (c) a base
  30. 30.🔍 Which is the odd one out? (a) detergent water (b) baking soda water (c) plain water (d) soap solution
  31. 31.True or false: a comb is not needed for the turmeric test. (a) False (b) True
  32. 32.🫧 Which of these is neutral? (a) soap solution (b) vinegar (c) plain water (d) baking soda water
  33. 33.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is the one thing we change. (a) True (b) False
  34. 34.🫧 Is orange juice an acid, a base or neutral? (a) a base (b) an acid (c) neutral
  35. 35.🟡 Turmeric paper meets vinegar. What happens? (a) turns reddish-brown (b) stays yellow
  36. 36.True or false: water is not needed for the turmeric test. (a) False (b) True
  37. 37.🫧 Is plain water an acid, a base or neutral? (a) an acid (b) a base (c) neutral
  38. 38.🔮 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
  39. 39.🧺 Which of these is needed for the turmeric test? (a) a battery cell (b) yeast (c) a comb (d) white paper strips
  40. 40.🫧 Which of these is neutral? (a) curd (b) tamarind water (c) sugar water (d) baking soda water

Answer key

  1. it stays yellow
  2. True
  3. use only kitchen items
  4. not needed
  5. a mirror
  6. we keep it the same
  7. True
  8. True
  9. turns reddish-brown
  10. needed
  11. turns reddish-brown
  12. turmeric powder
  13. soap solution
  14. baking soda water
  15. the turmeric paper
  16. we keep it the same
  17. an acid
  18. baking soda water
  19. False
  20. stays yellow
  21. turns reddish-brown
  22. False
  23. False
  24. the colour we see
  25. salt water
  26. soap solution
  27. False
  28. False
  29. an acid
  30. plain water
  31. True
  32. plain water
  33. False
  34. an acid
  35. stays yellow
  36. False
  37. neutral
  38. reddish
  39. white paper strips
  40. sugar water

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