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Yeast Balloon Experiment Worksheet

Science experiments lesson 16: Yeast balloon · Set 50 · 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 not needed for the yeast balloon? (a) warm water (b) a balloon (c) turmeric powder (d) sugar
  2. 2.🧺 Which of these is not needed for the yeast balloon? (a) warm water (b) a small bottle (c) sugar (d) a magnet
  3. 3.⚖️ 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 keep it the same (b) we change it (c) we measure it
  4. 4.True or false: a paper clip is needed for the yeast balloon. (a) False (b) True
  5. 5.⚖️ 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 sugar
  6. 6.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) a comb (b) sugar (c) a balloon (d) a small bottle
  7. 7.🍞 Which of these is something yeast does not need? (a) warm water (b) sugar (c) time (d) vinegar
  8. 8.🧺 Do we need a magnet for the yeast balloon? (a) not needed (b) needed
  9. 9.⚖️ 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 change it (b) we keep it the same (c) we measure it
  10. 10.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) a small bottle (b) dry yeast (c) a paper clip (d) sugar
  11. 11.🍞 Does yeast need time to make gas? (a) yeast needs it (b) yeast does not need it
  12. 12.🧺 Do we need sugar for the yeast balloon? (a) needed (b) not needed
  13. 13.🛟 After the yeast experiment, what should you do with the mixture? (a) throw it at a wall (b) keep it for a month (c) put it in your mouth (d) pour it down the sink
  14. 14.🔍 Which is the odd one out? (a) sugar (b) salt (c) warm water (d) time
  15. 15.🍞 Why does yeast work slowly in cold water? (a) cold slows yeast down (b) cold kills sugar (c) cold water is heavy (d) cold makes it pink
  16. 16.True or false: a magnet is not needed for the yeast balloon. (a) True (b) False
  17. 17.⚖️ 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 measure it (b) we change it (c) we keep it the same
  18. 18.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) warm water (b) a battery cell (c) sugar (d) a small bottle
  19. 19.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? Which of these is what we measure? (a) size of the balloon (b) the amount of yeast (c) the amount of sugar (d) the water temperature
  20. 20.True or false: turmeric powder is needed for the yeast balloon. (a) False (b) True
  21. 21.True or false: a balloon is needed for the yeast balloon. (a) True (b) False
  22. 22.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) a small bottle (b) dry yeast (c) a mirror (d) warm water
  23. 23.⚖️ 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
  24. 24.🧺 Which of these is not needed for the yeast balloon? (a) a small bottle (b) sugar (c) warm water (d) a comb
  25. 25.🍞 Which of these is something yeast does not need? (a) sugar (b) time (c) warm water (d) sunlight
  26. 26.🔍 Which is the odd one out? (a) sunlight (b) vinegar (c) sugar (d) salt
  27. 27.🧺 Do we need a balloon for the yeast balloon? (a) not needed (b) needed
  28. 28.🧺 Do we need a battery cell for the yeast balloon? (a) not needed (b) needed
  29. 29.True or false: sugar is something yeast does not need. (a) False (b) True
  30. 30.🧺 Which of these is needed for the yeast balloon? (a) a mirror (b) sugar (c) a paper clip (d) turmeric powder
  31. 31.🔍 Which is the odd one out? (a) salt (b) sunlight (c) vinegar (d) time
  32. 32.True or false: dry yeast is needed for the yeast balloon. (a) False (b) True
  33. 33.🍞 Which of these is something yeast needs? (a) vinegar (b) sunlight (c) warm water (d) salt
  34. 34.🍞 Why do we add sugar to the yeast? (a) to colour it (b) to make it heavy (c) to make it sweet (d) it is food for yeast
  35. 35.🍞 Does yeast need sugar to make gas? (a) yeast needs it (b) yeast does not need it
  36. 36.True or false: sugar is something yeast needs. (a) False (b) True
  37. 37.🍞 Which of these is something yeast needs? (a) salt (b) a magnet (c) sugar (d) sunlight
  38. 38.🍞 Does yeast need a magnet to make gas? (a) yeast needs it (b) yeast does not need it
  39. 39.True or false: turmeric powder is not needed for the yeast balloon. (a) False (b) True
  40. 40.True or false: a mirror is not needed for the yeast balloon. (a) True (b) False

Answer key

  1. turmeric powder
  2. a magnet
  3. we change it
  4. False
  5. the amount of sugar
  6. a comb
  7. vinegar
  8. not needed
  9. we keep it the same
  10. a paper clip
  11. yeast needs it
  12. needed
  13. pour it down the sink
  14. salt
  15. cold slows yeast down
  16. True
  17. we keep it the same
  18. a battery cell
  19. size of the balloon
  20. False
  21. True
  22. a mirror
  23. True
  24. a comb
  25. sunlight
  26. sugar
  27. needed
  28. not needed
  29. False
  30. sugar
  31. time
  32. True
  33. warm water
  34. it is food for yeast
  35. yeast needs it
  36. True
  37. sugar
  38. yeast does not need it
  39. True
  40. True

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