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

Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 162 · 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 of these is needed for the turmeric test? (a) a battery cell (b) water (c) a comb (d) a mirror
  2. 2.🟡 Which of these keeps turmeric yellow? (a) baking soda water (b) detergent water (c) soap solution (d) salt water
  3. 3.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns blue (b) it turns red (c) it turns black (d) it stays yellow
  4. 4.🫧 Is plain water an acid, a base or neutral? (a) neutral (b) an acid (c) a base
  5. 5.True or false: a balloon is needed for the turmeric test. (a) False (b) True
  6. 6.True or false: sugar water is an acid. (a) True (b) False
  7. 7.🫧 Is vinegar an acid, a base or neutral? (a) neutral (b) an acid (c) a base
  8. 8.🧺 Which of these is not needed for the turmeric test? (a) a balloon (b) water (c) lemon juice (d) white paper strips
  9. 9.🟡 Which of these turns turmeric reddish-brown? (a) lemon juice (b) salt water (c) detergent water (d) sugar water
  10. 10.True or false: sugar water keeps turmeric yellow. (a) True (b) False
  11. 11.⚖️ 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
  12. 12.🫧 Is sugar water an acid, a base or neutral? (a) neutral (b) a base (c) an acid
  13. 13.🛟 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
  14. 14.🛟 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
  15. 15.🫧 Which of these is neutral? (a) baking soda water (b) lemon juice (c) salt water (d) vinegar
  16. 16.True or false: water is not needed for the turmeric test. (a) True (b) False
  17. 17.🟡 Turmeric paper meets plain water. What happens? (a) stays yellow (b) turns reddish-brown
  18. 18.🫧 Is baking soda water an acid, a base or neutral? (a) an acid (b) a base (c) neutral
  19. 19.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) bright blue (b) reddish-brown (c) it stays white (d) green
  20. 20.🟡 Why does soap solution change turmeric’s colour? (a) soap is an acid (b) soap water is a base (c) soap is hot (d) soap is magnetic
  21. 21.🔮 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
  22. 22.🧺 Which of these is needed for the turmeric test? (a) yeast (b) a mirror (c) a magnet (d) a dropper or spoon
  23. 23.True or false: detergent water keeps turmeric yellow. (a) False (b) True
  24. 24.🟡 Which of these turns turmeric reddish-brown? (a) lemon juice (b) salt water (c) plain water (d) baking soda water
  25. 25.True or false: yeast is not needed for the turmeric test. (a) True (b) False
  26. 26.🫧 Is lemon juice an acid, a base or neutral? (a) neutral (b) a base (c) an acid
  27. 27.🧺 Do we need a dropper or spoon for the turmeric test? (a) needed (b) not needed
  28. 28.🧺 Do we need yeast for the turmeric test? (a) not needed (b) needed
  29. 29.🧺 Do we need turmeric powder for the turmeric test? (a) not needed (b) needed
  30. 30.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) soap solution (c) yeast (d) turmeric powder
  31. 31.True or false: lemon juice is needed for the turmeric test. (a) True (b) False
  32. 32.True or false: tamarind water turns turmeric reddish-brown. (a) False (b) True
  33. 33.True or false: lemon juice keeps turmeric yellow. (a) True (b) False
  34. 34.🧺 Which of these is needed for the turmeric test? (a) yeast (b) a balloon (c) turmeric powder (d) a magnet
  35. 35.True or false: a mirror is needed for the turmeric test. (a) True (b) False
  36. 36.🔍 Which is the odd one out? (a) soap solution (b) baking soda water (c) vinegar (d) detergent water
  37. 37.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the light we look in”? (a) we measure it (b) we keep it the same (c) we change it
  38. 38.True or false: lemon juice is an acid. (a) True (b) False
  39. 39.🟡 Turmeric paper meets vinegar. What happens? (a) stays yellow (b) turns reddish-brown
  40. 40.🧺 Do we need a battery cell for the turmeric test? (a) needed (b) not needed

Answer key

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

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