← Turmeric indicator: acid or base? lesson New set →

Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 421 · 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 baking soda water. What happens? (a) turns reddish-brown (b) stays yellow
  2. 2.True or false: plain water turns turmeric reddish-brown. (a) True (b) False
  3. 3.🫧 Which of these is a base? (a) vinegar (b) sugar water (c) tamarind water (d) soap solution
  4. 4.🟡 Turmeric paper meets salt water. What happens? (a) stays yellow (b) turns reddish-brown
  5. 5.🛟 Turmeric stains clothes. What should you wear? (a) your school uniform (b) a white party dress (c) an old shirt or apron (d) your best clothes
  6. 6.🫧 Is lemon juice an acid, a base or neutral? (a) an acid (b) a base (c) neutral
  7. 7.True or false: lemon juice keeps turmeric yellow. (a) False (b) True
  8. 8.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the number of drops (b) the liquid we test (c) the colour we see
  9. 9.🟡 Which of these keeps turmeric yellow? (a) baking soda water (b) detergent water (c) lemon juice (d) soap solution
  10. 10.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) a magnet (c) soap solution (d) water
  11. 11.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the colour we see (b) the light we look in (c) the turmeric paper (d) the liquid we test
  12. 12.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the colour we see (b) the liquid we test (c) the turmeric paper
  13. 13.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the colour we see”? (a) we measure it (b) we keep it the same (c) we change it
  14. 14.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns red (b) it turns black (c) it stays yellow (d) it turns blue
  15. 15.🧺 Which of these is not needed for the turmeric test? (a) a mirror (b) lemon juice (c) soap solution (d) a dropper or spoon
  16. 16.🧺 Do we need soap solution for the turmeric test? (a) not needed (b) needed
  17. 17.True or false: plain water keeps turmeric yellow. (a) False (b) True
  18. 18.🧺 Which of these is needed for the turmeric test? (a) a dropper or spoon (b) a battery cell (c) a comb (d) a magnet
  19. 19.🧺 Do we need yeast for the turmeric test? (a) needed (b) not needed
  20. 20.🔍 Which is the odd one out? (a) lemon juice (b) plain water (c) detergent water (d) vinegar
  21. 21.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the liquid we test”? (a) we measure it (b) we change it (c) we keep it the same
  22. 22.True or false: salt water is a base. (a) False (b) True
  23. 23.🫧 Which of these is an acid? (a) salt water (b) tamarind water (c) detergent water (d) baking soda water
  24. 24.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) it stays white (b) green (c) bright blue (d) reddish-brown
  25. 25.True or false: a battery cell is not needed for the turmeric test. (a) True (b) False
  26. 26.🫧 Which of these is a base? (a) detergent water (b) orange juice (c) salt water (d) vinegar
  27. 27.🧺 Which of these is not needed for the turmeric test? (a) lemon juice (b) a balloon (c) turmeric powder (d) water
  28. 28.🟡 Which of these turns turmeric reddish-brown? (a) tamarind water (b) vinegar (c) detergent water (d) lemon juice
  29. 29.🫧 Is salt water an acid, a base or neutral? (a) an acid (b) neutral (c) a base
  30. 30.🫧 Is soap solution an acid, a base or neutral? (a) an acid (b) a base (c) neutral
  31. 31.🟡 Which of these turns turmeric paper reddish-brown? (a) lemon juice (b) soap solution (c) vinegar (d) sugar water
  32. 32.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the number of drops”? (a) we measure it (b) we keep it the same (c) we change it
  33. 33.🧺 Which of these is needed for the turmeric test? (a) a mirror (b) a balloon (c) white paper strips (d) a comb
  34. 34.🧺 Do we need a magnet for the turmeric test? (a) needed (b) not needed
  35. 35.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a dropper or spoon (b) soap solution (c) water (d) yeast
  36. 36.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is what we measure. (a) True (b) False
  37. 37.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is kept the same. (a) True (b) False
  38. 38.🫧 Which of these is neutral? (a) orange juice (b) vinegar (c) soap solution (d) salt water
  39. 39.🫧 Which of these is an acid? (a) detergent water (b) curd (c) salt water (d) baking soda water
  40. 40.🫧 Is vinegar an acid, a base or neutral? (a) an acid (b) neutral (c) a base

Answer key

  1. turns reddish-brown
  2. False
  3. soap solution
  4. stays yellow
  5. an old shirt or apron
  6. an acid
  7. True
  8. the number of drops
  9. lemon juice
  10. a magnet
  11. the liquid we test
  12. the turmeric paper
  13. we measure it
  14. it stays yellow
  15. a mirror
  16. needed
  17. True
  18. a dropper or spoon
  19. not needed
  20. detergent water
  21. we change it
  22. False
  23. tamarind water
  24. reddish-brown
  25. True
  26. detergent water
  27. a balloon
  28. detergent water
  29. neutral
  30. a base
  31. soap solution
  32. we keep it the same
  33. white paper strips
  34. not needed
  35. yeast
  36. False
  37. False
  38. salt water
  39. curd
  40. an acid

Free science experiments lessons, practice and worksheets at talentjr.in/science-experiments-for-kids