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

Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 957 · 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.True or false: lemon juice is not needed for the turmeric test. (a) False (b) True
  2. 2.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the liquid we test (b) the colour we see (c) the turmeric paper (d) the number of drops
  3. 3.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) a dropper or spoon (c) water (d) yeast
  4. 4.True or false: tamarind water turns turmeric reddish-brown. (a) False (b) True
  5. 5.True or false: yeast is not needed for the turmeric test. (a) False (b) True
  6. 6.🫧 Which of these is an acid? (a) sugar water (b) curd (c) baking soda water (d) soap solution
  7. 7.True or false: baking soda water keeps turmeric yellow. (a) True (b) False
  8. 8.🛟 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
  9. 9.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is kept the same. (a) False (b) True
  10. 10.True or false: vinegar is an acid. (a) False (b) True
  11. 11.🧺 Do we need yeast for the turmeric test? (a) not needed (b) needed
  12. 12.⚖️ 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
  13. 13.True or false: salt water turns turmeric reddish-brown. (a) True (b) False
  14. 14.🟡 Turmeric paper meets sugar water. What happens? (a) turns reddish-brown (b) stays yellow
  15. 15.True or false: vinegar turns turmeric reddish-brown. (a) True (b) False
  16. 16.⚖️ 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
  17. 17.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is what we measure. (a) False (b) True
  18. 18.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is kept the same. (a) False (b) True
  19. 19.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) green (b) bright blue (c) reddish (d) white at once
  20. 20.🧺 Do we need lemon juice for the turmeric test? (a) needed (b) not needed
  21. 21.🫧 Which of these is a base? (a) vinegar (b) lemon juice (c) salt water (d) soap solution
  22. 22.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the light we look in is what we measure. (a) True (b) False
  23. 23.⚖️ 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 number of drops (c) the turmeric paper (d) the liquid we test
  24. 24.True or false: tamarind water keeps turmeric yellow. (a) False (b) True
  25. 25.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is kept the same. (a) True (b) False
  26. 26.🫧 Is lemon juice an acid, a base or neutral? (a) a base (b) an acid (c) neutral
  27. 27.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) a dropper or spoon (c) a battery cell (d) water
  28. 28.True or false: a dropper or spoon is not needed for the turmeric test. (a) True (b) False
  29. 29.True or false: a balloon is not needed for the turmeric test. (a) True (b) False
  30. 30.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a balloon (b) water (c) a dropper or spoon (d) soap solution
  31. 31.True or false: baking soda water turns turmeric reddish-brown. (a) False (b) True
  32. 32.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is kept the same. (a) False (b) True
  33. 33.🧺 Do we need a mirror for the turmeric test? (a) not needed (b) needed
  34. 34.🟡 Which of these turns turmeric paper reddish-brown? (a) lemon juice (b) sugar water (c) vinegar (d) soap solution
  35. 35.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it stays yellow (b) it turns green (c) reddish-brown (d) it turns blue
  36. 36.True or false: vinegar is a base. (a) True (b) False
  37. 37.🧺 Do we need a dropper or spoon for the turmeric test? (a) needed (b) not needed
  38. 38.🫧 Is plain water an acid, a base or neutral? (a) an acid (b) neutral (c) a base
  39. 39.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the number of drops”? (a) we change it (b) we measure it (c) we keep it the same
  40. 40.True or false: lemon juice is neutral. (a) False (b) True

Answer key

  1. False
  2. the colour we see
  3. yeast
  4. False
  5. True
  6. curd
  7. False
  8. use only kitchen items
  9. False
  10. True
  11. not needed
  12. True
  13. False
  14. stays yellow
  15. False
  16. we change it
  17. False
  18. True
  19. reddish
  20. needed
  21. soap solution
  22. False
  23. the liquid we test
  24. True
  25. True
  26. an acid
  27. a battery cell
  28. False
  29. True
  30. a balloon
  31. True
  32. False
  33. not needed
  34. soap solution
  35. reddish-brown
  36. False
  37. needed
  38. neutral
  39. we keep it the same
  40. False

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