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Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 329 · 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? What do we do with “the turmeric paper”? (a) we measure it (b) we keep it the same (c) we change it
  2. 2.True or false: white paper strips is needed for the turmeric test. (a) True (b) False
  3. 3.🛟 Turmeric stains clothes. What should you wear? (a) a white party dress (b) your best clothes (c) your school uniform (d) an old shirt or apron
  4. 4.🟡 Which of these keeps turmeric yellow? (a) baking soda water (b) detergent water (c) sugar water (d) soap solution
  5. 5.🔮 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
  6. 6.🔍 Which is the odd one out? (a) baking soda water (b) soap solution (c) detergent water (d) salt water
  7. 7.🧺 Which of these is needed for the turmeric test? (a) a comb (b) yeast (c) a magnet (d) soap solution
  8. 8.⚖️ 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
  9. 9.🧺 Do we need a battery cell for the turmeric test? (a) not needed (b) needed
  10. 10.🟡 Turmeric paper meets lemon juice. What happens? (a) turns reddish-brown (b) stays yellow
  11. 11.⚖️ 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 change it (c) we measure it
  12. 12.🧺 Which of these is not needed for the turmeric test? (a) white paper strips (b) a magnet (c) soap solution (d) lemon juice
  13. 13.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) reddish (b) green (c) white at once (d) bright blue
  14. 14.True or false: salt water is neutral. (a) False (b) True
  15. 15.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the liquid we test (b) the turmeric paper (c) the colour we see (d) the number of drops
  16. 16.True or false: soap solution turns turmeric reddish-brown. (a) True (b) False
  17. 17.🟡 Which of these turns turmeric reddish-brown? (a) vinegar (b) soap solution (c) plain water (d) tamarind water
  18. 18.🧺 Do we need a magnet for the turmeric test? (a) needed (b) not needed
  19. 19.True or false: vinegar turns turmeric reddish-brown. (a) False (b) True
  20. 20.True or false: curd is a base. (a) False (b) True
  21. 21.🫧 Which of these is neutral? (a) vinegar (b) soap solution (c) plain water (d) tamarind water
  22. 22.🔍 Which is the odd one out? (a) sugar water (b) salt water (c) tamarind water (d) detergent water
  23. 23.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) white paper strips (c) water (d) a comb
  24. 24.🫧 Which of these is a base? (a) orange juice (b) baking soda water (c) salt water (d) curd
  25. 25.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the light we look in”? (a) we keep it the same (b) we change it (c) we measure it
  26. 26.🫧 Is plain water an acid, a base or neutral? (a) neutral (b) a base (c) an acid
  27. 27.⚖️ 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
  28. 28.⚖️ 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
  29. 29.True or false: baking soda water is neutral. (a) False (b) True
  30. 30.🔍 Which is the odd one out? (a) sugar water (b) soap solution (c) baking soda water (d) detergent water
  31. 31.🔍 Which is the odd one out? (a) detergent water (b) soap solution (c) baking soda water (d) vinegar
  32. 32.🧺 Do we need a mirror for the turmeric test? (a) not needed (b) needed
  33. 33.🛟 Which rule keeps the turmeric test safe? (a) mix bathroom cleaners (b) sniff each bottle hard (c) use only kitchen items (d) sip each liquid
  34. 34.🍋 A reddish turmeric spot gets a few drops of lemon juice. What happens? (a) it turns blue (b) it disappears (c) it turns yellow again (d) it turns darker red
  35. 35.🫧 Which of these is an acid? (a) soap solution (b) curd (c) baking soda water (d) plain water
  36. 36.🧺 Do we need turmeric powder for the turmeric test? (a) needed (b) not needed
  37. 37.🫧 Is lemon juice an acid, a base or neutral? (a) neutral (b) an acid (c) a base
  38. 38.True or false: detergent water is a base. (a) False (b) True
  39. 39.🫧 Is curd an acid, a base or neutral? (a) neutral (b) a base (c) an acid
  40. 40.True or false: lemon juice turns turmeric reddish-brown. (a) True (b) False

Answer key

  1. we keep it the same
  2. True
  3. an old shirt or apron
  4. sugar water
  5. it stays yellow
  6. salt water
  7. soap solution
  8. we measure it
  9. not needed
  10. stays yellow
  11. we change it
  12. a magnet
  13. reddish
  14. True
  15. the liquid we test
  16. True
  17. soap solution
  18. not needed
  19. False
  20. False
  21. plain water
  22. detergent water
  23. a comb
  24. baking soda water
  25. we keep it the same
  26. neutral
  27. True
  28. the light we look in
  29. False
  30. sugar water
  31. vinegar
  32. not needed
  33. use only kitchen items
  34. it turns yellow again
  35. curd
  36. needed
  37. an acid
  38. True
  39. an acid
  40. False

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