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Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 878 · 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.🟡 Turmeric paper meets detergent water. What happens? (a) turns reddish-brown (b) stays yellow
  2. 2.🔍 Which is the odd one out? (a) baking soda water (b) soap solution (c) detergent water (d) plain water
  3. 3.True or false: plain water keeps turmeric yellow. (a) True (b) False
  4. 4.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the light we look in (b) the number of drops (c) the liquid we test (d) the colour we see
  5. 5.True or false: lemon juice is needed for the turmeric test. (a) False (b) True
  6. 6.🔍 Which is the odd one out? (a) detergent water (b) soap solution (c) sugar water (d) baking soda water
  7. 7.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) it stays white (b) reddish-brown (c) bright blue (d) green
  8. 8.True or false: soap solution turns turmeric reddish-brown. (a) True (b) False
  9. 9.🧺 Which of these is needed for the turmeric test? (a) a mirror (b) water (c) a battery cell (d) a magnet
  10. 10.⚖️ 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
  11. 11.🫧 Is plain water an acid, a base or neutral? (a) neutral (b) a base (c) an acid
  12. 12.🧺 Which of these is not needed for the turmeric test? (a) a mirror (b) a dropper or spoon (c) lemon juice (d) turmeric powder
  13. 13.🛟 Turmeric stains clothes. What should you wear? (a) an old shirt or apron (b) a white party dress (c) your best clothes (d) your school uniform
  14. 14.🛟 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
  15. 15.🟡 Which of these turns turmeric reddish-brown? (a) lemon juice (b) baking soda water (c) plain water (d) salt water
  16. 16.🫧 Which of these is a base? (a) baking soda water (b) lemon juice (c) orange juice (d) tamarind water
  17. 17.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) reddish-brown (b) it turns green (c) it turns blue (d) it stays yellow
  18. 18.🫧 Is vinegar an acid, a base or neutral? (a) an acid (b) neutral (c) a base
  19. 19.True or false: water is needed for the turmeric test. (a) True (b) False
  20. 20.🧺 Do we need water for the turmeric test? (a) needed (b) not needed
  21. 21.True or false: sugar water is an acid. (a) False (b) True
  22. 22.🧺 Do we need a magnet for the turmeric test? (a) needed (b) not needed
  23. 23.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is kept the same. (a) False (b) True
  24. 24.🟡 Which of these turns turmeric reddish-brown? (a) salt water (b) vinegar (c) plain water (d) detergent water
  25. 25.🟡 Which of these keeps turmeric yellow? (a) soap solution (b) baking soda water (c) detergent water (d) tamarind water
  26. 26.🧺 Do we need a balloon for the turmeric test? (a) not needed (b) needed
  27. 27.🟡 Which of these turns turmeric paper reddish-brown? (a) vinegar (b) sugar water (c) lemon juice (d) soap solution
  28. 28.🧺 Do we need white paper strips for the turmeric test? (a) needed (b) not needed
  29. 29.🧺 Which of these is needed for the turmeric test? (a) a dropper or spoon (b) yeast (c) a mirror (d) a balloon
  30. 30.🟡 Which of these turns turmeric reddish-brown? (a) lemon juice (b) sugar water (c) soap solution (d) salt water
  31. 31.🟡 Turmeric paper meets soap solution. What happens? (a) turns reddish-brown (b) stays yellow
  32. 32.⚖️ 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
  33. 33.🫧 Is tamarind water an acid, a base or neutral? (a) an acid (b) neutral (c) a base
  34. 34.True or false: a balloon is needed for the turmeric test. (a) False (b) True
  35. 35.True or false: soap solution is a base. (a) False (b) True
  36. 36.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the light we look in is kept the same. (a) True (b) False
  37. 37.True or false: turmeric powder is not needed for the turmeric test. (a) False (b) True
  38. 38.🔍 Which is the odd one out? (a) soap solution (b) lemon juice (c) baking soda water (d) detergent water
  39. 39.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the colour we see”? (a) we measure it (b) we change it (c) we keep it the same
  40. 40.🧺 Which of these is needed for the turmeric test? (a) lemon juice (b) yeast (c) a mirror (d) a balloon

Answer key

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

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