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Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 89 · 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.🔍 Which is the odd one out? (a) detergent water (b) baking soda water (c) tamarind water (d) soap solution
  2. 2.🛟 Which rule keeps the turmeric test safe? (a) sniff each bottle hard (b) sip each liquid (c) use only kitchen items (d) mix bathroom cleaners
  3. 3.🟡 Which of these keeps turmeric yellow? (a) baking soda water (b) soap solution (c) tamarind water (d) detergent water
  4. 4.🟡 Which of these keeps turmeric yellow? (a) salt water (b) baking soda water (c) detergent water (d) soap solution
  5. 5.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns red (b) it turns blue (c) it turns black (d) it stays yellow
  6. 6.True or false: white paper strips is needed for the turmeric test. (a) False (b) True
  7. 7.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the turmeric paper (b) the colour we see (c) the liquid we test
  8. 8.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a dropper or spoon (b) a comb (c) lemon juice (d) white paper strips
  9. 9.⚖️ 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
  10. 10.True or false: sugar water turns turmeric reddish-brown. (a) False (b) True
  11. 11.True or false: water is not needed for the turmeric test. (a) True (b) False
  12. 12.🫧 Is baking soda water an acid, a base or neutral? (a) an acid (b) neutral (c) a base
  13. 13.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it stays yellow (b) reddish-brown (c) it turns green (d) it turns blue
  14. 14.🔍 Which is the odd one out? (a) baking soda water (b) plain water (c) detergent water (d) soap solution
  15. 15.True or false: a battery cell is not needed for the turmeric test. (a) False (b) True
  16. 16.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) a mirror (c) soap solution (d) a dropper or spoon
  17. 17.🟡 Turmeric paper meets baking soda water. What happens? (a) stays yellow (b) turns reddish-brown
  18. 18.🟡 Which of these turns turmeric reddish-brown? (a) baking soda water (b) salt water (c) plain water (d) tamarind water
  19. 19.🧺 Do we need yeast for the turmeric test? (a) needed (b) not needed
  20. 20.True or false: lemon juice keeps turmeric yellow. (a) False (b) True
  21. 21.🟡 Turmeric paper meets sugar water. What happens? (a) stays yellow (b) turns reddish-brown
  22. 22.🟡 Turmeric paper meets lemon juice. What happens? (a) stays yellow (b) turns reddish-brown
  23. 23.True or false: soap solution is not needed for the turmeric test. (a) True (b) False
  24. 24.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) bright blue (b) white at once (c) green (d) reddish
  25. 25.🫧 Is tamarind water an acid, a base or neutral? (a) neutral (b) a base (c) an acid
  26. 26.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) white paper strips (c) lemon juice (d) a balloon
  27. 27.🧺 Which of these is not needed for the turmeric test? (a) lemon juice (b) turmeric powder (c) soap solution (d) a comb
  28. 28.🔍 Which is the odd one out? (a) plain water (b) lemon juice (c) vinegar (d) baking soda water
  29. 29.🧺 Which of these is needed for the turmeric test? (a) a mirror (b) lemon juice (c) a comb (d) yeast
  30. 30.🍋 A drop of lemon juice falls on turmeric paper. What happens? (a) it turns black (b) it turns blue (c) it stays yellow (d) it turns red
  31. 31.🛟 Turmeric stains clothes. What should you wear? (a) a white party dress (b) an old shirt or apron (c) your best clothes (d) your school uniform
  32. 32.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is what we measure. (a) True (b) False
  33. 33.🔍 Which is the odd one out? (a) baking soda water (b) soap solution (c) vinegar (d) detergent water
  34. 34.True or false: tamarind water is an acid. (a) True (b) False
  35. 35.🫧 Which of these is an acid? (a) salt water (b) baking soda water (c) plain water (d) vinegar
  36. 36.🫧 Is plain water an acid, a base or neutral? (a) a base (b) an acid (c) neutral
  37. 37.True or false: sugar water is neutral. (a) False (b) True
  38. 38.🟡 Which of these turns turmeric reddish-brown? (a) salt water (b) sugar water (c) soap solution (d) tamarind water
  39. 39.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the turmeric paper (b) the colour we see (c) the number of drops (d) the liquid we test
  40. 40.True or false: detergent water turns turmeric reddish-brown. (a) True (b) False

Answer key

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

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