← Yeast balloon lesson New set →

Yeast Balloon Experiment Worksheet

Science experiments lesson 16: Yeast balloon · Set 714 · 40 questions
TalentJR

What you do (Yeast is alive): 1. Pour warm (not hot) water into the bottle — an adult checks it. 2. Add the yeast and the sugar and swirl gently. 3. Stretch the balloon over the bottle’s mouth. 4. Wait 30 minutes, measure the balloon, then pour the mixture away and wash up.

NameDateTime takenScore ___ / 40
  1. 1.🔮 Predict: you wait 2 hours instead of 10 minutes. What happens? (a) the balloon is smaller (b) it turns to bread (c) it shrinks to nothing (d) the balloon is bigger
  2. 2.True or false: warm water is not needed for the yeast balloon. (a) True (b) False
  3. 3.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) a small bottle (b) a balloon (c) warm water (d) a paper clip
  4. 4.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? Which of these is the one thing we change? (a) the water temperature (b) size of the balloon (c) the same bottles (d) the amount of yeast
  5. 5.True or false: a small bottle is needed for the yeast balloon. (a) True (b) False
  6. 6.🍞 Which of these is something yeast needs? (a) sunlight (b) salt (c) a magnet (d) sugar
  7. 7.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) a small bottle (b) dry yeast (c) warm water (d) a magnet
  8. 8.🍞 Which of these is something yeast needs? (a) sunlight (b) warm water (c) salt (d) vinegar
  9. 9.True or false: sugar is needed for the yeast balloon. (a) True (b) False
  10. 10.🧺 Which of these is needed for the yeast balloon? (a) a battery cell (b) a magnet (c) a mirror (d) a small bottle
  11. 11.🔍 Which is the odd one out? (a) sunlight (b) warm water (c) time (d) sugar
  12. 12.🍞 Which of these is something yeast needs? (a) vinegar (b) a magnet (c) time (d) salt
  13. 13.True or false: a paper clip is needed for the yeast balloon. (a) True (b) False
  14. 14.🧺 Do we need a battery cell for the yeast balloon? (a) needed (b) not needed
  15. 15.🍞 Does yeast need salt to make gas? (a) yeast needs it (b) yeast does not need it
  16. 16.🔍 Which is the odd one out? (a) salt (b) vinegar (c) sunlight (d) sugar
  17. 17.True or false: a magnet is something yeast does not need. (a) False (b) True
  18. 18.🧺 Which of these is needed for the yeast balloon? (a) a magnet (b) turmeric powder (c) a mirror (d) dry yeast
  19. 19.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? True or false: the water temperature is what we measure. (a) True (b) False
  20. 20.True or false: vinegar is something yeast needs. (a) False (b) True
  21. 21.🔍 Which is the odd one out? (a) sugar (b) time (c) salt (d) warm water
  22. 22.🧺 Do we need dry yeast for the yeast balloon? (a) needed (b) not needed
  23. 23.🧺 Do we need a magnet for the yeast balloon? (a) not needed (b) needed
  24. 24.🍞 Does yeast need sugar to make gas? (a) yeast needs it (b) yeast does not need it
  25. 25.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? True or false: the amount of yeast is kept the same. (a) True (b) False
  26. 26.True or false: vinegar is something yeast does not need. (a) False (b) True
  27. 27.🧺 Do we need turmeric powder for the yeast balloon? (a) needed (b) not needed
  28. 28.🛟 The water for the yeast should be ___. (a) ice cold (b) boiling hot (c) warm, not hot (d) very salty
  29. 29.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? True or false: the same bottles is the one thing we change. (a) False (b) True
  30. 30.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) a balloon (b) a comb (c) dry yeast (d) a small bottle
  31. 31.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? What do we do with “the amount of water”? (a) we keep it the same (b) we change it (c) we measure it
  32. 32.True or false: a magnet is needed for the yeast balloon. (a) True (b) False
  33. 33.🍞 Where is yeast used in the kitchen? (a) to clean floors (b) to wash dishes (c) to colour rice (d) to make bread rise
  34. 34.🧺 Do we need a mirror for the yeast balloon? (a) not needed (b) needed
  35. 35.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? What do we do with “the water temperature”? (a) we measure it (b) we change it (c) we keep it the same
  36. 36.True or false: time is something yeast needs. (a) False (b) True
  37. 37.🍞 Does yeast need vinegar to make gas? (a) yeast needs it (b) yeast does not need it
  38. 38.🛟 After the yeast experiment, what should you do with the mixture? (a) throw it at a wall (b) keep it for a month (c) pour it down the sink (d) put it in your mouth
  39. 39.🔍 Which is the odd one out? (a) sunlight (b) a magnet (c) time (d) vinegar
  40. 40.🎈 What blows up the balloon in the yeast experiment? (a) carbon dioxide gas (b) steam (c) air from outside (d) smoke

Answer key

  1. the balloon is bigger
  2. False
  3. a paper clip
  4. the water temperature
  5. True
  6. sugar
  7. a magnet
  8. warm water
  9. True
  10. a small bottle
  11. sunlight
  12. time
  13. False
  14. not needed
  15. yeast does not need it
  16. sugar
  17. True
  18. dry yeast
  19. False
  20. False
  21. salt
  22. needed
  23. not needed
  24. yeast needs it
  25. True
  26. True
  27. not needed
  28. warm, not hot
  29. False
  30. a comb
  31. we keep it the same
  32. False
  33. to make bread rise
  34. not needed
  35. we change it
  36. True
  37. yeast does not need it
  38. pour it down the sink
  39. time
  40. carbon dioxide gas

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