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

Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 832 · 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) a comb (c) a mirror (d) white paper strips
  2. 2.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is the one thing we change. (a) False (b) True
  3. 3.True or false: soap solution keeps turmeric yellow. (a) True (b) False
  4. 4.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the light we look in is kept the same. (a) False (b) True
  5. 5.True or false: vinegar turns turmeric reddish-brown. (a) True (b) False
  6. 6.🔍 Which is the odd one out? (a) soap solution (b) tamarind water (c) plain water (d) vinegar
  7. 7.⚖️ 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 change it (c) we keep it the same
  8. 8.🟡 Which of these keeps turmeric yellow? (a) soap solution (b) detergent water (c) vinegar (d) baking soda water
  9. 9.🟡 Turmeric paper meets lemon juice. What happens? (a) stays yellow (b) turns reddish-brown
  10. 10.🟡 Which of these turns turmeric reddish-brown? (a) sugar water (b) vinegar (c) detergent water (d) plain water
  11. 11.🔍 Which is the odd one out? (a) salt water (b) vinegar (c) plain water (d) baking soda water
  12. 12.🍋 A reddish turmeric spot gets a few drops of lemon juice. What happens? (a) it turns darker red (b) it disappears (c) it turns yellow again (d) it turns blue
  13. 13.🟡 Which of these keeps turmeric yellow? (a) soap solution (b) baking soda water (c) salt water (d) detergent water
  14. 14.🛟 Which rule keeps the turmeric test safe? (a) sip each liquid (b) sniff each bottle hard (c) mix bathroom cleaners (d) use only kitchen items
  15. 15.⚖️ 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 number of drops (d) the liquid we test
  16. 16.🟡 Which of these keeps turmeric yellow? (a) detergent water (b) soap solution (c) plain water (d) baking soda water
  17. 17.True or false: baking soda water keeps turmeric yellow. (a) False (b) True
  18. 18.True or false: a mirror is needed for the turmeric test. (a) False (b) True
  19. 19.🫧 Is curd an acid, a base or neutral? (a) an acid (b) a base (c) neutral
  20. 20.🧺 Do we need a balloon for the turmeric test? (a) needed (b) not needed
  21. 21.True or false: soap solution is not needed for the turmeric test. (a) False (b) True
  22. 22.True or false: turmeric powder is not needed for the turmeric test. (a) True (b) False
  23. 23.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the turmeric paper”? (a) we measure it (b) we keep it the same (c) we change it
  24. 24.🧺 Do we need a comb for the turmeric test? (a) not needed (b) needed
  25. 25.True or false: detergent water turns turmeric reddish-brown. (a) False (b) True
  26. 26.🧺 Do we need lemon juice for the turmeric test? (a) needed (b) not needed
  27. 27.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) white paper strips (c) a mirror (d) turmeric powder
  28. 28.🧺 Do we need white paper strips for the turmeric test? (a) not needed (b) needed
  29. 29.True or false: lemon juice keeps turmeric yellow. (a) False (b) True
  30. 30.🫧 Is plain water an acid, a base or neutral? (a) neutral (b) a base (c) an acid
  31. 31.🟡 Turmeric paper meets soap solution. What happens? (a) stays yellow (b) turns reddish-brown
  32. 32.🫧 Is vinegar an acid, a base or neutral? (a) a base (b) an acid (c) neutral
  33. 33.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the liquid we test (b) the number of drops (c) the colour we see
  34. 34.🟡 Turmeric paper meets vinegar. What happens? (a) turns reddish-brown (b) stays yellow
  35. 35.🫧 Which of these is neutral? (a) soap solution (b) vinegar (c) plain water (d) tamarind water
  36. 36.🔍 Which is the odd one out? (a) baking soda water (b) detergent water (c) soap solution (d) plain water
  37. 37.True or false: curd is a base. (a) True (b) False
  38. 38.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) white paper strips (b) soap solution (c) a dropper or spoon (d) yeast
  39. 39.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the liquid we test (b) the turmeric paper (c) the number of drops (d) the colour we see
  40. 40.🧺 Do we need water for the turmeric test? (a) not needed (b) needed

Answer key

  1. white paper strips
  2. True
  3. False
  4. True
  5. False
  6. soap solution
  7. we keep it the same
  8. vinegar
  9. stays yellow
  10. detergent water
  11. baking soda water
  12. it turns yellow again
  13. salt water
  14. use only kitchen items
  15. the liquid we test
  16. plain water
  17. False
  18. False
  19. an acid
  20. not needed
  21. False
  22. False
  23. we keep it the same
  24. not needed
  25. True
  26. needed
  27. a mirror
  28. needed
  29. True
  30. neutral
  31. turns reddish-brown
  32. an acid
  33. the number of drops
  34. stays yellow
  35. plain water
  36. plain water
  37. False
  38. yeast
  39. the colour we see
  40. needed

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