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Yeast Balloon Experiment Worksheet

Science experiments lesson 16: Yeast balloon · Set 331 · 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.⚖️ 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
  2. 2.True or false: salt is something yeast does not need. (a) True (b) False
  3. 3.🍞 Which of these is something yeast does not need? (a) sugar (b) sunlight (c) time (d) warm water
  4. 4.🧺 Do we need turmeric powder for the yeast balloon? (a) not needed (b) needed
  5. 5.🧺 Which of these is needed for the yeast balloon? (a) turmeric powder (b) a comb (c) a magnet (d) warm water
  6. 6.🛟 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
  7. 7.🧺 Which of these is needed for the yeast balloon? (a) a balloon (b) turmeric powder (c) a paper clip (d) a battery cell
  8. 8.⚖️ 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
  9. 9.⚖️ 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
  10. 10.True or false: turmeric powder is not needed for the yeast balloon. (a) False (b) True
  11. 11.⚖️ 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
  12. 12.True or false: dry yeast is needed for the yeast balloon. (a) True (b) False
  13. 13.⚖️ 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
  14. 14.🧺 Which of these is not needed for the yeast balloon? (a) warm water (b) a balloon (c) a small bottle (d) a paper clip
  15. 15.📘 What is yeast? (a) a tiny living fungus (b) a kind of stone (c) a kind of salt (d) a kind of sugar
  16. 16.⚖️ 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) False (b) True
  17. 17.⚖️ 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 amount of yeast (b) size of the balloon (c) the water temperature (d) the amount of water
  18. 18.🍞 Why do we add sugar to the yeast? (a) to make it heavy (b) to make it sweet (c) it is food for yeast (d) to colour it
  19. 19.🍞 Does yeast need sugar to make gas? (a) yeast does not need it (b) yeast needs it
  20. 20.🍞 Which of these is something yeast does not need? (a) warm water (b) time (c) sugar (d) a magnet
  21. 21.🔍 Which is the odd one out? (a) vinegar (b) warm water (c) sugar (d) time
  22. 22.🔮 Predict: you wait 2 hours instead of 10 minutes. What happens? (a) the balloon is bigger (b) it turns to bread (c) the balloon is smaller (d) it shrinks to nothing
  23. 23.🍞 Which of these is something yeast needs? (a) salt (b) vinegar (c) sunlight (d) time
  24. 24.🔍 Which is the odd one out? (a) warm water (b) a magnet (c) time (d) sugar
  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) False (b) True
  26. 26.🧺 Do we need a small bottle for the yeast balloon? (a) not needed (b) needed
  27. 27.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) dry yeast (b) a small bottle (c) sugar (d) a mirror
  28. 28.🧺 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 paper clip
  29. 29.🧺 Do we need warm water for the yeast balloon? (a) not needed (b) needed
  30. 30.🧺 Do we need a battery cell for the yeast balloon? (a) needed (b) not needed
  31. 31.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? True or false: the amount of yeast is the one thing we change. (a) False (b) True
  32. 32.🔍 Which is the odd one out? (a) time (b) a magnet (c) vinegar (d) sunlight
  33. 33.🍞 Which of these is something yeast does not need? (a) sugar (b) warm water (c) time (d) salt
  34. 34.True or false: sugar is needed for the yeast balloon. (a) False (b) True
  35. 35.True or false: a comb is not needed for the yeast balloon. (a) False (b) True
  36. 36.🔍 Which is the odd one out? (a) time (b) sunlight (c) sugar (d) warm water
  37. 37.🧺 Do we need a comb for the yeast balloon? (a) not needed (b) needed
  38. 38.🧺 Which of these is not needed for the yeast balloon? (a) sugar (b) dry yeast (c) a balloon (d) a battery cell
  39. 39.🧺 Do we need sugar for the yeast balloon? (a) needed (b) not needed
  40. 40.🧺 Which of these is not needed for the yeast balloon? (a) dry yeast (b) a small bottle (c) a comb (d) a balloon

Answer key

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

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