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Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 933 · 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? Which of these is the one thing we change? (a) the number of drops (b) the liquid we test (c) the turmeric paper (d) the light we look in
  2. 2.⚖️ 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
  3. 3.True or false: lemon juice turns turmeric reddish-brown. (a) False (b) True
  4. 4.🧺 Do we need soap solution for the turmeric test? (a) not needed (b) needed
  5. 5.🍋 A drop of lemon juice falls on turmeric paper. What happens? (a) it turns blue (b) it turns black (c) it turns red (d) it stays yellow
  6. 6.🫧 Is baking soda water an acid, a base or neutral? (a) neutral (b) a base (c) an acid
  7. 7.True or false: soap solution is needed for the turmeric test. (a) False (b) True
  8. 8.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) water (c) a magnet (d) turmeric powder
  9. 9.🫧 Is plain water an acid, a base or neutral? (a) neutral (b) a base (c) an acid
  10. 10.🧺 Do we need lemon juice for the turmeric test? (a) not needed (b) needed
  11. 11.🧺 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
  12. 12.True or false: a battery cell is not needed for the turmeric test. (a) False (b) True
  13. 13.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is kept the same. (a) True (b) False
  14. 14.🔍 Which is the odd one out? (a) soap solution (b) detergent water (c) salt water (d) baking soda water
  15. 15.🧺 Do we need a magnet for the turmeric test? (a) not needed (b) needed
  16. 16.🧺 Do we need a comb for the turmeric test? (a) needed (b) not needed
  17. 17.🛟 Which rule keeps the turmeric test safe? (a) use only kitchen items (b) mix bathroom cleaners (c) sniff each bottle hard (d) sip each liquid
  18. 18.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a comb (b) soap solution (c) white paper strips (d) water
  19. 19.🫧 Which of these is neutral? (a) tamarind water (b) sugar water (c) vinegar (d) soap solution
  20. 20.True or false: lemon juice is needed for the turmeric test. (a) True (b) False
  21. 21.🟡 Turmeric paper meets baking soda water. What happens? (a) turns reddish-brown (b) stays yellow
  22. 22.🟡 Turmeric paper meets sugar water. What happens? (a) stays yellow (b) turns reddish-brown
  23. 23.🧺 Which of these is not needed for the turmeric test? (a) a battery cell (b) water (c) soap solution (d) turmeric powder
  24. 24.🧺 Do we need a mirror for the turmeric test? (a) needed (b) not needed
  25. 25.🧺 Do we need a battery cell for the turmeric test? (a) needed (b) not needed
  26. 26.🧺 Which of these is needed for the turmeric test? (a) soap solution (b) a magnet (c) a comb (d) a battery cell
  27. 27.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the number of drops (b) the liquid we test (c) the light we look in (d) the colour we see
  28. 28.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the light we look in is kept the same. (a) True (b) False
  29. 29.True or false: orange juice is an acid. (a) True (b) False
  30. 30.🫧 Which of these is a base? (a) detergent water (b) curd (c) lemon juice (d) vinegar
  31. 31.🟡 Turmeric paper meets salt water. What happens? (a) stays yellow (b) turns reddish-brown
  32. 32.🫧 Which of these is an acid? (a) baking soda water (b) salt water (c) plain water (d) lemon juice
  33. 33.🧺 Which of these is not needed for the turmeric test? (a) a dropper or spoon (b) soap solution (c) yeast (d) water
  34. 34.🫧 Is tamarind water an acid, a base or neutral? (a) neutral (b) a base (c) an acid
  35. 35.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is kept the same. (a) False (b) True
  36. 36.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the colour we see (b) the number of drops (c) the liquid we test
  37. 37.True or false: sugar water turns turmeric reddish-brown. (a) True (b) False
  38. 38.🫧 Is vinegar an acid, a base or neutral? (a) a base (b) an acid (c) neutral
  39. 39.True or false: baking soda water keeps turmeric yellow. (a) True (b) False
  40. 40.True or false: a magnet is not needed for the turmeric test. (a) True (b) False

Answer key

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

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