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

Turmeric Indicator Experiment Worksheet

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

Answer key

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

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