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Yeast Balloon Experiment Worksheet

Science experiments lesson 16: Yeast balloon · Set 173 · 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.🛟 After the yeast experiment, what should you do with the mixture? (a) keep it for a month (b) put it in your mouth (c) throw it at a wall (d) pour it down the sink
  2. 2.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? True or false: the same bottles is kept the same. (a) True (b) False
  3. 3.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? True or false: the amount of sugar is the one thing we change. (a) False (b) True
  4. 4.True or false: vinegar is something yeast needs. (a) True (b) False
  5. 5.🍞 Which of these is something yeast needs? (a) salt (b) sunlight (c) a magnet (d) sugar
  6. 6.True or false: turmeric powder is needed for the yeast balloon. (a) False (b) True
  7. 7.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? True or false: size of the balloon is what we measure. (a) False (b) True
  8. 8.🧺 Do we need a battery cell for the yeast balloon? (a) needed (b) not needed
  9. 9.True or false: time is something yeast does not need. (a) False (b) True
  10. 10.🍞 Which of these is something yeast does not need? (a) sugar (b) warm water (c) salt (d) time
  11. 11.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) a magnet (b) a small bottle (c) dry yeast (d) warm water
  12. 12.True or false: warm water is something yeast does not need. (a) True (b) False
  13. 13.🛟 The water for the yeast should be ___. (a) ice cold (b) very salty (c) boiling hot (d) warm, not hot
  14. 14.🧺 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
  15. 15.🍞 Does yeast need sunlight to make gas? (a) yeast does not need it (b) yeast needs it
  16. 16.🍞 Does yeast need sugar to make gas? (a) yeast does not need it (b) yeast needs it
  17. 17.🔍 Which is the odd one out? (a) time (b) sugar (c) salt (d) warm water
  18. 18.🍞 Does yeast need salt to make gas? (a) yeast does not need it (b) yeast needs it
  19. 19.🍞 Which of these is something yeast does not need? (a) warm water (b) sugar (c) vinegar (d) time
  20. 20.🧺 Do we need a mirror for the yeast balloon? (a) not needed (b) needed
  21. 21.🔍 Which is the odd one out? (a) a magnet (b) sunlight (c) salt (d) time
  22. 22.🎈 What blows up the balloon in the yeast experiment? (a) steam (b) air from outside (c) carbon dioxide gas (d) smoke
  23. 23.🧺 Do we need turmeric powder for the yeast balloon? (a) not needed (b) needed
  24. 24.🍞 Which of these is something yeast needs? (a) vinegar (b) salt (c) sunlight (d) time
  25. 25.🧺 Which of these is needed for the yeast balloon? (a) sugar (b) a mirror (c) turmeric powder (d) a magnet
  26. 26.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? True or false: the amount of water is what we measure. (a) False (b) True
  27. 27.🧺 Do we need a paper clip for the yeast balloon? (a) not needed (b) needed
  28. 28.🍞 Does yeast need vinegar to make gas? (a) yeast needs it (b) yeast does not need it
  29. 29.🍞 Why do we add sugar to the yeast? (a) to make it heavy (b) it is food for yeast (c) to colour it (d) to make it sweet
  30. 30.📘 What is yeast? (a) a kind of stone (b) a kind of sugar (c) a tiny living fungus (d) a kind of salt
  31. 31.🧺 Do we need a balloon for the yeast balloon? (a) not needed (b) needed
  32. 32.🍞 Where is yeast used in the kitchen? (a) to colour rice (b) to clean floors (c) to wash dishes (d) to make bread rise
  33. 33.🍞 Which of these is something yeast needs? (a) salt (b) vinegar (c) sunlight (d) warm water
  34. 34.True or false: a battery cell is needed for the yeast balloon. (a) False (b) True
  35. 35.🍞 Which of these is something yeast does not need? (a) warm water (b) sugar (c) sunlight (d) time
  36. 36.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) turmeric powder (b) warm water (c) dry yeast (d) a balloon
  37. 37.True or false: a magnet is something yeast does not need. (a) True (b) False
  38. 38.🧺 Which of these is not needed for the yeast balloon? (a) a balloon (b) dry yeast (c) a paper clip (d) sugar
  39. 39.🧺 Do we need sugar for the yeast balloon? (a) needed (b) not needed
  40. 40.⚖️ 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 same bottles (b) the amount of yeast (c) the water temperature (d) the amount of water

Answer key

  1. pour it down the sink
  2. True
  3. False
  4. False
  5. sugar
  6. False
  7. True
  8. not needed
  9. False
  10. salt
  11. a magnet
  12. False
  13. warm, not hot
  14. a mirror
  15. yeast does not need it
  16. yeast needs it
  17. salt
  18. yeast does not need it
  19. vinegar
  20. not needed
  21. time
  22. carbon dioxide gas
  23. not needed
  24. time
  25. sugar
  26. False
  27. not needed
  28. yeast does not need it
  29. it is food for yeast
  30. a tiny living fungus
  31. needed
  32. to make bread rise
  33. warm water
  34. False
  35. sunlight
  36. turmeric powder
  37. True
  38. a paper clip
  39. needed
  40. the water temperature

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