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Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 334 · 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.🧺 Do we need turmeric powder for the turmeric test? (a) needed (b) not needed
  2. 2.🟡 Turmeric paper meets baking soda water. What happens? (a) turns reddish-brown (b) stays yellow
  3. 3.🛟 Which rule keeps the turmeric test safe? (a) mix bathroom cleaners (b) sip each liquid (c) use only kitchen items (d) sniff each bottle hard
  4. 4.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is kept the same. (a) False (b) True
  5. 5.🫧 Which of these is a base? (a) orange juice (b) salt water (c) detergent water (d) vinegar
  6. 6.🟡 Why does soap solution change turmeric’s colour? (a) soap is hot (b) soap water is a base (c) soap is an acid (d) soap is magnetic
  7. 7.🧺 Do we need water for the turmeric test? (a) needed (b) not needed
  8. 8.🧺 Do we need soap solution for the turmeric test? (a) needed (b) not needed
  9. 9.🧺 Which of these is not needed for the turmeric test? (a) soap solution (b) turmeric powder (c) a magnet (d) water
  10. 10.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns blue (b) it stays yellow (c) it turns red (d) it turns black
  11. 11.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the colour we see”? (a) we keep it the same (b) we measure it (c) we change it
  12. 12.True or false: a magnet is not needed for the turmeric test. (a) True (b) False
  13. 13.True or false: plain water keeps turmeric yellow. (a) False (b) True
  14. 14.🫧 Which of these is neutral? (a) plain water (b) detergent water (c) baking soda water (d) curd
  15. 15.True or false: lemon juice is neutral. (a) True (b) False
  16. 16.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the liquid we test”? (a) we measure it (b) we keep it the same (c) we change it
  17. 17.True or false: lemon juice is an acid. (a) True (b) False
  18. 18.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a dropper or spoon (b) lemon juice (c) a balloon (d) white paper strips
  19. 19.🧺 Do we need a battery cell for the turmeric test? (a) not needed (b) needed
  20. 20.🔍 Which is the odd one out? (a) baking soda water (b) detergent water (c) tamarind water (d) soap solution
  21. 21.True or false: vinegar turns turmeric reddish-brown. (a) True (b) False
  22. 22.True or false: a battery cell is not needed for the turmeric test. (a) True (b) False
  23. 23.🫧 Is curd an acid, a base or neutral? (a) neutral (b) an acid (c) a base
  24. 24.True or false: white paper strips is not needed for the turmeric test. (a) True (b) False
  25. 25.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the number of drops (b) the turmeric paper (c) the liquid we test (d) the colour we see
  26. 26.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) lemon juice (c) water (d) a battery cell
  27. 27.🟡 Which of these keeps turmeric yellow? (a) sugar water (b) soap solution (c) baking soda water (d) detergent water
  28. 28.🧺 Which of these is needed for the turmeric test? (a) a balloon (b) a dropper or spoon (c) yeast (d) a mirror
  29. 29.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is kept the same. (a) False (b) True
  30. 30.True or false: tamarind water is a base. (a) True (b) False
  31. 31.🟡 Which of these turns turmeric paper reddish-brown? (a) vinegar (b) soap solution (c) lemon juice (d) sugar water
  32. 32.True or false: lemon juice is needed for the turmeric test. (a) False (b) True
  33. 33.🔍 Which is the odd one out? (a) salt water (b) baking soda water (c) tamarind water (d) plain water
  34. 34.True or false: a mirror is not needed for the turmeric test. (a) True (b) False
  35. 35.🧺 Do we need a comb for the turmeric test? (a) needed (b) not needed
  36. 36.True or false: baking soda water keeps turmeric yellow. (a) True (b) False
  37. 37.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the light we look in is the one thing we change. (a) False (b) True
  38. 38.🔍 Which is the odd one out? (a) sugar water (b) detergent water (c) baking soda water (d) soap solution
  39. 39.⚖️ 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 change it (c) we keep it the same
  40. 40.🛟 Turmeric stains clothes. What should you wear? (a) your school uniform (b) a white party dress (c) your best clothes (d) an old shirt or apron

Answer key

  1. needed
  2. turns reddish-brown
  3. use only kitchen items
  4. True
  5. detergent water
  6. soap water is a base
  7. needed
  8. needed
  9. a magnet
  10. it stays yellow
  11. we measure it
  12. True
  13. True
  14. plain water
  15. False
  16. we change it
  17. True
  18. a balloon
  19. not needed
  20. tamarind water
  21. False
  22. True
  23. an acid
  24. False
  25. the colour we see
  26. a battery cell
  27. sugar water
  28. a dropper or spoon
  29. True
  30. False
  31. soap solution
  32. True
  33. baking soda water
  34. True
  35. not needed
  36. False
  37. False
  38. sugar water
  39. we keep it the same
  40. an old shirt or apron

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