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

Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 330 · 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 neutral? (a) plain water (b) detergent water (c) curd (d) lemon juice
  2. 2.🧺 Which of these is not needed for the turmeric test? (a) a dropper or spoon (b) water (c) lemon juice (d) a balloon
  3. 3.🧺 Do we need lemon juice for the turmeric test? (a) not needed (b) needed
  4. 4.🟡 Why does soap solution change turmeric’s colour? (a) soap water is a base (b) soap is an acid (c) soap is magnetic (d) soap is hot
  5. 5.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the light we look in”? (a) we keep it the same (b) we measure it (c) we change it
  6. 6.🧺 Which of these is needed for the turmeric test? (a) a magnet (b) a balloon (c) a dropper or spoon (d) a mirror
  7. 7.🧺 Do we need yeast for the turmeric test? (a) not needed (b) needed
  8. 8.True or false: baking soda water turns turmeric reddish-brown. (a) False (b) True
  9. 9.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) it stays white (b) bright blue (c) reddish-brown (d) green
  10. 10.🫧 Which of these is an acid? (a) sugar water (b) vinegar (c) plain water (d) salt water
  11. 11.🛟 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
  12. 12.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is what we measure. (a) True (b) False
  13. 13.🟡 Which of these turns turmeric reddish-brown? (a) salt water (b) lemon juice (c) vinegar (d) soap solution
  14. 14.🧺 Do we need white paper strips for the turmeric test? (a) not needed (b) needed
  15. 15.🫧 Which of these is a base? (a) tamarind water (b) lemon juice (c) sugar water (d) soap solution
  16. 16.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a balloon (b) white paper strips (c) turmeric powder (d) water
  17. 17.🟡 Turmeric paper meets vinegar. What happens? (a) stays yellow (b) turns reddish-brown
  18. 18.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a magnet (b) turmeric powder (c) white paper strips (d) water
  19. 19.🔍 Which is the odd one out? (a) soap solution (b) baking soda water (c) sugar water (d) detergent water
  20. 20.True or false: salt water is neutral. (a) False (b) True
  21. 21.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) bright blue (b) green (c) white at once (d) reddish
  22. 22.🫧 Which of these is a base? (a) sugar water (b) detergent water (c) lemon juice (d) plain water
  23. 23.🟡 Turmeric paper meets soap solution. What happens? (a) turns reddish-brown (b) stays yellow
  24. 24.True or false: vinegar is an acid. (a) False (b) True
  25. 25.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it turns green (b) reddish-brown (c) it turns blue (d) it stays yellow
  26. 26.🧺 Do we need a magnet for the turmeric test? (a) needed (b) not needed
  27. 27.🫧 Which of these is neutral? (a) soap solution (b) baking soda water (c) tamarind water (d) sugar water
  28. 28.True or false: salt water turns turmeric reddish-brown. (a) False (b) True
  29. 29.🟡 Which of these keeps turmeric yellow? (a) soap solution (b) lemon juice (c) baking soda water (d) detergent water
  30. 30.True or false: vinegar keeps turmeric yellow. (a) True (b) False
  31. 31.🫧 Is salt water an acid, a base or neutral? (a) neutral (b) an acid (c) a base
  32. 32.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is the one thing we change. (a) True (b) False
  33. 33.🔍 Which is the odd one out? (a) tamarind water (b) soap solution (c) salt water (d) plain water
  34. 34.🫧 Is lemon juice an acid, a base or neutral? (a) neutral (b) an acid (c) a base
  35. 35.🟡 Which of these turns turmeric reddish-brown? (a) vinegar (b) lemon juice (c) baking soda water (d) tamarind water
  36. 36.⚖️ 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
  37. 37.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is the one thing we change. (a) True (b) False
  38. 38.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the number of drops (b) the turmeric paper (c) the light we look in (d) the liquid we test
  39. 39.🧺 Which of these is needed for the turmeric test? (a) a battery cell (b) a comb (c) a mirror (d) water
  40. 40.🧺 Do we need a balloon for the turmeric test? (a) needed (b) not needed

Answer key

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

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