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Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 341 · 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.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) turmeric powder (c) a balloon (d) lemon juice
  2. 2.📘 What do we call something that changes colour to show an acid or a base? (a) an indicator (b) a pulley (c) a prism (d) a magnet
  3. 3.True or false: a mirror is not needed for the turmeric test. (a) True (b) False
  4. 4.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the liquid we test”? (a) we keep it the same (b) we measure it (c) we change it
  5. 5.🛟 Which rule keeps the turmeric test safe? (a) mix bathroom cleaners (b) sniff each bottle hard (c) sip each liquid (d) use only kitchen items
  6. 6.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is kept the same. (a) True (b) False
  7. 7.⚖️ 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 colour we see (d) the number of drops
  8. 8.🔍 Which is the odd one out? (a) baking soda water (b) lemon juice (c) salt water (d) sugar water
  9. 9.⚖️ 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
  10. 10.🧺 Which of these is needed for the turmeric test? (a) yeast (b) white paper strips (c) a magnet (d) a balloon
  11. 11.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a battery cell (b) water (c) turmeric powder (d) soap solution
  12. 12.🛟 Turmeric stains clothes. What should you wear? (a) an old shirt or apron (b) a white party dress (c) your school uniform (d) your best clothes
  13. 13.🫧 Is vinegar an acid, a base or neutral? (a) a base (b) an acid (c) neutral
  14. 14.🫧 Which of these is a base? (a) tamarind water (b) lemon juice (c) baking soda water (d) curd
  15. 15.🟡 Turmeric paper meets plain water. What happens? (a) turns reddish-brown (b) stays yellow
  16. 16.🟡 Why does soap solution change turmeric’s colour? (a) soap is hot (b) soap is an acid (c) soap water is a base (d) soap is magnetic
  17. 17.🔍 Which is the odd one out? (a) vinegar (b) detergent water (c) salt water (d) lemon juice
  18. 18.🧺 Which of these is not needed for the turmeric test? (a) lemon juice (b) a balloon (c) soap solution (d) turmeric powder
  19. 19.🧺 Do we need water for the turmeric test? (a) not needed (b) needed
  20. 20.🧺 Do we need yeast for the turmeric test? (a) needed (b) not needed
  21. 21.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it turns green (b) it stays yellow (c) reddish-brown (d) it turns blue
  22. 22.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the turmeric paper”? (a) we change it (b) we measure it (c) we keep it the same
  23. 23.True or false: vinegar is a base. (a) True (b) False
  24. 24.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) a magnet (c) turmeric powder (d) water
  25. 25.🔍 Which is the odd one out? (a) detergent water (b) vinegar (c) soap solution (d) baking soda water
  26. 26.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) green (b) bright blue (c) it stays white (d) reddish-brown
  27. 27.🔍 Which is the odd one out? (a) detergent water (b) tamarind water (c) soap solution (d) baking soda water
  28. 28.True or false: white paper strips is not needed for the turmeric test. (a) True (b) False
  29. 29.🧺 Do we need turmeric powder for the turmeric test? (a) not needed (b) needed
  30. 30.True or false: soap solution keeps turmeric yellow. (a) True (b) False
  31. 31.⚖️ 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
  32. 32.True or false: a mirror is needed for the turmeric test. (a) True (b) False
  33. 33.True or false: detergent water is an acid. (a) True (b) False
  34. 34.🧺 Which of these is needed for the turmeric test? (a) a balloon (b) a magnet (c) soap solution (d) a mirror
  35. 35.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) water (c) a comb (d) white paper strips
  36. 36.🫧 Is lemon juice an acid, a base or neutral? (a) neutral (b) an acid (c) a base
  37. 37.🫧 Which of these is an acid? (a) salt water (b) sugar water (c) curd (d) plain water
  38. 38.True or false: lemon juice is an acid. (a) False (b) True
  39. 39.True or false: a battery cell is needed for the turmeric test. (a) True (b) False
  40. 40.🔍 Which is the odd one out? (a) salt water (b) soap solution (c) sugar water (d) plain water

Answer key

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

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