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

Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 533 · 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 a base? (a) sugar water (b) orange juice (c) soap solution (d) plain water
  2. 2.🟡 Why does soap solution change turmeric’s colour? (a) soap is magnetic (b) soap water is a base (c) soap is hot (d) soap is an acid
  3. 3.True or false: lemon juice is an acid. (a) True (b) False
  4. 4.🔍 Which is the odd one out? (a) sugar water (b) tamarind water (c) vinegar (d) detergent water
  5. 5.🛟 Which rule keeps the turmeric test safe? (a) sniff each bottle hard (b) sip each liquid (c) use only kitchen items (d) mix bathroom cleaners
  6. 6.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a battery cell (b) turmeric powder (c) lemon juice (d) water
  7. 7.🫧 Is soap solution an acid, a base or neutral? (a) a base (b) an acid (c) neutral
  8. 8.🧺 Do we need soap solution for the turmeric test? (a) needed (b) not needed
  9. 9.🟡 Turmeric paper meets lemon juice. What happens? (a) turns reddish-brown (b) stays yellow
  10. 10.True or false: tamarind water keeps turmeric yellow. (a) False (b) True
  11. 11.True or false: turmeric powder is not needed for the turmeric test. (a) True (b) False
  12. 12.🟡 Which of these keeps turmeric yellow? (a) soap solution (b) sugar water (c) baking soda water (d) detergent water
  13. 13.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the liquid we test (b) the light we look in (c) the colour we see
  14. 14.🟡 Turmeric paper meets sugar water. What happens? (a) stays yellow (b) turns reddish-brown
  15. 15.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a dropper or spoon (b) turmeric powder (c) a balloon (d) water
  16. 16.🧺 Do we need turmeric powder for the turmeric test? (a) not needed (b) needed
  17. 17.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the turmeric paper”? (a) we measure it (b) we change it (c) we keep it the same
  18. 18.🟡 Turmeric paper meets salt water. What happens? (a) turns reddish-brown (b) stays yellow
  19. 19.True or false: tamarind water turns turmeric reddish-brown. (a) False (b) True
  20. 20.🔍 Which is the odd one out? (a) vinegar (b) baking soda water (c) salt water (d) sugar water
  21. 21.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) white paper strips (b) a dropper or spoon (c) turmeric powder (d) yeast
  22. 22.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is kept the same. (a) False (b) True
  23. 23.🟡 Which of these turns turmeric reddish-brown? (a) vinegar (b) lemon juice (c) soap solution (d) plain water
  24. 24.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it turns blue (b) reddish-brown (c) it stays yellow (d) it turns green
  25. 25.🫧 Is plain water an acid, a base or neutral? (a) an acid (b) a base (c) neutral
  26. 26.🧺 Do we need white paper strips for the turmeric test? (a) not needed (b) needed
  27. 27.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the number of drops”? (a) we measure it (b) we change it (c) we keep it the same
  28. 28.⚖️ 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
  29. 29.🧺 Which of these is needed for the turmeric test? (a) a magnet (b) a dropper or spoon (c) a mirror (d) a comb
  30. 30.🔍 Which is the odd one out? (a) lemon juice (b) soap solution (c) detergent water (d) baking soda water
  31. 31.🫧 Is lemon juice 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 liquid we test is kept the same. (a) True (b) False
  33. 33.True or false: yeast is needed for the turmeric test. (a) False (b) True
  34. 34.🟡 Which of these keeps turmeric yellow? (a) baking soda water (b) detergent water (c) plain water (d) soap solution
  35. 35.🟡 Turmeric paper meets vinegar. What happens? (a) turns reddish-brown (b) stays yellow
  36. 36.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the light we look in (b) the liquid we test (c) the turmeric paper (d) the number of drops
  37. 37.True or false: plain water is an acid. (a) True (b) False
  38. 38.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the colour we see”? (a) we measure it (b) we change it (c) we keep it the same
  39. 39.True or false: a mirror is needed for the turmeric test. (a) True (b) False
  40. 40.True or false: salt water turns turmeric reddish-brown. (a) False (b) True

Answer key

  1. soap solution
  2. soap water is a base
  3. True
  4. detergent water
  5. use only kitchen items
  6. a battery cell
  7. a base
  8. needed
  9. stays yellow
  10. True
  11. False
  12. sugar water
  13. the light we look in
  14. stays yellow
  15. a balloon
  16. needed
  17. we keep it the same
  18. stays yellow
  19. False
  20. baking soda water
  21. yeast
  22. True
  23. soap solution
  24. reddish-brown
  25. neutral
  26. needed
  27. we keep it the same
  28. we change it
  29. a dropper or spoon
  30. lemon juice
  31. an acid
  32. False
  33. False
  34. plain water
  35. stays yellow
  36. the liquid we test
  37. False
  38. we measure it
  39. False
  40. False

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