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Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 98 · 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.

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

Answer key

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

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