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Yeast Balloon Experiment Worksheet

Science experiments lesson 16: Yeast balloon · Set 262 · 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.

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  1. 1.🍞 Which of these is something yeast does not need? (a) time (b) salt (c) warm water (d) sugar
  2. 2.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) a paper clip (b) dry yeast (c) sugar (d) a small bottle
  3. 3.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? Which of these is kept the same? (a) size of the balloon (b) the same bottles (c) the water temperature
  4. 4.🧺 Do we need warm water for the yeast balloon? (a) needed (b) not needed
  5. 5.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) sugar (b) a comb (c) dry yeast (d) warm water
  6. 6.True or false: a comb is needed for the yeast balloon. (a) True (b) False
  7. 7.🍞 Does yeast need a magnet to make gas? (a) yeast needs it (b) yeast does not need it
  8. 8.⚖️ 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 measure it (c) we change it
  9. 9.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? What do we do with “size of the balloon”? (a) we measure it (b) we keep it the same (c) we change it
  10. 10.🔮 Predict: you leave out the sugar. What happens to the balloon? (a) it turns yellow (b) it grows much faster (c) it bursts at once (d) it grows very little
  11. 11.🔍 Which is the odd one out? (a) time (b) sugar (c) salt (d) warm water
  12. 12.🔍 Which is the odd one out? (a) a magnet (b) salt (c) vinegar (d) time
  13. 13.🍞 Does yeast need time to make gas? (a) yeast does not need it (b) yeast needs it
  14. 14.True or false: time is something yeast needs. (a) True (b) False
  15. 15.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? True or false: the water temperature is the one thing we change. (a) True (b) False
  16. 16.🧺 Do we need a comb for the yeast balloon? (a) not needed (b) needed
  17. 17.True or false: a balloon is needed for the yeast balloon. (a) False (b) True
  18. 18.🧺 Do we need a small bottle for the yeast balloon? (a) not needed (b) needed
  19. 19.🍞 Does yeast need vinegar to make gas? (a) yeast needs it (b) yeast does not need it
  20. 20.True or false: a small bottle is needed for the yeast balloon. (a) False (b) True
  21. 21.🧺 Which of these is not needed for the yeast balloon? (a) a small bottle (b) a comb (c) a balloon (d) dry yeast
  22. 22.True or false: a mirror is needed for the yeast balloon. (a) True (b) False
  23. 23.🧺 Do we need dry yeast for the yeast balloon? (a) not needed (b) needed
  24. 24.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? Which of these is kept the same? (a) size of the balloon (b) the water temperature (c) the amount of water
  25. 25.🧺 Which of these is needed for the yeast balloon? (a) a magnet (b) a battery cell (c) a comb (d) warm water
  26. 26.True or false: turmeric powder is not needed for the yeast balloon. (a) False (b) True
  27. 27.True or false: a mirror is not needed for the yeast balloon. (a) True (b) False
  28. 28.🍞 Which of these is something yeast does not need? (a) time (b) warm water (c) sugar (d) vinegar
  29. 29.🧺 Which of these is not needed for the yeast balloon? (a) a balloon (b) dry yeast (c) a small bottle (d) turmeric powder
  30. 30.🔍 Which is the odd one out? (a) sunlight (b) sugar (c) warm water (d) time
  31. 31.🧺 Which of these is needed for the yeast balloon? (a) a mirror (b) a balloon (c) turmeric powder (d) a paper clip
  32. 32.🔍 Which is the odd one out? (a) sugar (b) time (c) warm water (d) vinegar
  33. 33.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? Which of these is what we measure? (a) the amount of water (b) the amount of sugar (c) the water temperature (d) size of the balloon
  34. 34.🧺 Do we need sugar for the yeast balloon? (a) not needed (b) needed
  35. 35.True or false: a magnet is needed for the yeast balloon. (a) True (b) False
  36. 36.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? True or false: the amount of sugar is kept the same. (a) False (b) True
  37. 37.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? What do we do with “the same bottles”? (a) we change it (b) we measure it (c) we keep it the same
  38. 38.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? What do we do with “the amount of yeast”? (a) we measure it (b) we change it (c) we keep it the same
  39. 39.🧺 Do we need a balloon for the yeast balloon? (a) not needed (b) needed
  40. 40.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) a small bottle (b) dry yeast (c) sugar (d) a magnet

Answer key

  1. salt
  2. a paper clip
  3. the same bottles
  4. needed
  5. a comb
  6. False
  7. yeast does not need it
  8. we keep it the same
  9. we measure it
  10. it grows very little
  11. salt
  12. time
  13. yeast needs it
  14. True
  15. True
  16. not needed
  17. True
  18. needed
  19. yeast does not need it
  20. True
  21. a comb
  22. False
  23. needed
  24. the amount of water
  25. warm water
  26. True
  27. True
  28. vinegar
  29. turmeric powder
  30. sunlight
  31. a balloon
  32. vinegar
  33. size of the balloon
  34. needed
  35. False
  36. True
  37. we keep it the same
  38. we keep it the same
  39. needed
  40. a magnet

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