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Yeast Balloon Experiment Worksheet

Science experiments lesson 16: Yeast balloon · Set 447 · 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.🔍 Which is the odd one out? (a) time (b) salt (c) warm water (d) sugar
  2. 2.🔮 Predict: you wait 2 hours instead of 10 minutes. What happens? (a) it shrinks to nothing (b) the balloon is bigger (c) the balloon is smaller (d) it turns to bread
  3. 3.🧺 Which of these is not needed for the yeast balloon? (a) sugar (b) warm water (c) a small bottle (d) turmeric powder
  4. 4.🔍 Which is the odd one out? (a) time (b) vinegar (c) warm water (d) sugar
  5. 5.📘 What is yeast? (a) a kind of salt (b) a kind of sugar (c) a kind of stone (d) a tiny living fungus
  6. 6.🍞 Which of these is something yeast needs? (a) sunlight (b) salt (c) warm water (d) vinegar
  7. 7.🍞 Does yeast need vinegar to make gas? (a) yeast does not need it (b) yeast needs it
  8. 8.⚖️ 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 water (b) size of the balloon (c) the water temperature (d) the amount of yeast
  9. 9.🔍 Which is the odd one out? (a) vinegar (b) salt (c) sugar (d) a magnet
  10. 10.🧺 Which of these is not needed for the yeast balloon? (a) a balloon (b) a magnet (c) warm water (d) sugar
  11. 11.🔍 Which is the odd one out? (a) time (b) sugar (c) sunlight (d) warm water
  12. 12.🍞 Which of these is something yeast does not need? (a) warm water (b) sunlight (c) sugar (d) time
  13. 13.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? What do we do with “the amount of sugar”? (a) we measure it (b) we change it (c) we keep it the same
  14. 14.🍞 Does yeast need a magnet to make gas? (a) yeast does not need it (b) yeast needs it
  15. 15.🛟 The water for the yeast should be ___. (a) ice cold (b) boiling hot (c) warm, not hot (d) very salty
  16. 16.🧺 Which of these is needed for the yeast balloon? (a) turmeric powder (b) a magnet (c) sugar (d) a mirror
  17. 17.True or false: a battery cell is not needed for the yeast balloon. (a) True (b) False
  18. 18.⚖️ 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 keep it the same (c) we change it
  19. 19.True or false: vinegar is something yeast needs. (a) False (b) True
  20. 20.🧺 Do we need warm water for the yeast balloon? (a) not needed (b) needed
  21. 21.🧺 Which of these is needed for the yeast balloon? (a) a magnet (b) a balloon (c) a mirror (d) a battery cell
  22. 22.⚖️ 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 sugar (b) the water temperature (c) size of the balloon (d) the same bottles
  23. 23.True or false: a magnet is something yeast needs. (a) False (b) True
  24. 24.🧺 Do we need a small bottle for the yeast balloon? (a) not needed (b) needed
  25. 25.🍞 Which of these is something yeast does not need? (a) sugar (b) salt (c) time (d) warm water
  26. 26.🧺 Do we need dry yeast for the yeast balloon? (a) needed (b) not needed
  27. 27.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? True or false: size of the balloon is the one thing we change. (a) False (b) True
  28. 28.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) a small bottle (b) a balloon (c) sugar (d) a comb
  29. 29.🍞 Which of these is something yeast does not need? (a) time (b) sugar (c) warm water (d) a magnet
  30. 30.True or false: sunlight is something yeast does not need. (a) False (b) True
  31. 31.True or false: a paper clip is needed for the yeast balloon. (a) True (b) False
  32. 32.True or false: a mirror is not needed for the yeast balloon. (a) False (b) True
  33. 33.True or false: time is something yeast does not need. (a) False (b) True
  34. 34.⚖️ 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 keep it the same (b) we change it (c) we measure it
  35. 35.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? Which of these is kept the same? (a) the water temperature (b) the amount of yeast (c) size of the balloon
  36. 36.⚖️ 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
  37. 37.🍞 Does yeast need time to make gas? (a) yeast needs it (b) yeast does not need it
  38. 38.🔍 Which is the odd one out? (a) time (b) a magnet (c) vinegar (d) salt
  39. 39.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) a battery cell (b) warm water (c) dry yeast (d) a balloon
  40. 40.🍞 Which of these is something yeast needs? (a) salt (b) sunlight (c) a magnet (d) time

Answer key

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

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