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Yeast Balloon Experiment Worksheet

Science experiments lesson 16: Yeast balloon · Set 585 · 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.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? True or false: the amount of water is kept the same. (a) True (b) False
  2. 2.⚖️ 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) the water temperature (c) size of the balloon (d) the amount of water
  3. 3.🍞 Which of these is something yeast needs? (a) a magnet (b) vinegar (c) salt (d) sugar
  4. 4.⚖️ 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 measure it (c) we change it
  5. 5.⚖️ 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 keep it the same (c) we measure it
  6. 6.🧺 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 comb
  7. 7.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) dry yeast (b) a balloon (c) turmeric powder (d) a small bottle
  8. 8.🧺 Do we need a magnet for the yeast balloon? (a) needed (b) not needed
  9. 9.🧺 Which of these is needed for the yeast balloon? (a) a comb (b) turmeric powder (c) warm water (d) a magnet
  10. 10.🔍 Which is the odd one out? (a) warm water (b) vinegar (c) time (d) sugar
  11. 11.🍞 Which of these is something yeast does not need? (a) warm water (b) time (c) salt (d) sugar
  12. 12.True or false: dry yeast is not needed for the yeast balloon. (a) False (b) True
  13. 13.🔍 Which is the odd one out? (a) sunlight (b) salt (c) warm water (d) vinegar
  14. 14.🧺 Which of these is not needed for the yeast balloon? (a) sugar (b) a balloon (c) dry yeast (d) a magnet
  15. 15.🧺 Do we need a battery cell for the yeast balloon? (a) not needed (b) needed
  16. 16.🧺 Do we need a balloon for the yeast balloon? (a) not needed (b) needed
  17. 17.🍞 Does yeast need sunlight to make gas? (a) yeast needs it (b) yeast does not need it
  18. 18.🛟 After the yeast experiment, what should you do with the mixture? (a) pour it down the sink (b) throw it at a wall (c) keep it for a month (d) put it in your mouth
  19. 19.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? Which of these is kept the same? (a) the amount of yeast (b) the water temperature (c) size of the balloon
  20. 20.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) sugar (b) dry yeast (c) a battery cell (d) a balloon
  21. 21.True or false: a mirror is needed for the yeast balloon. (a) False (b) True
  22. 22.🧺 Which of these is not needed for the yeast balloon? (a) a balloon (b) sugar (c) dry yeast (d) a mirror
  23. 23.🍞 Which of these is something yeast needs? (a) sunlight (b) salt (c) time (d) vinegar
  24. 24.True or false: salt is something yeast does not need. (a) False (b) True
  25. 25.📘 What is yeast? (a) a kind of sugar (b) a kind of salt (c) a tiny living fungus (d) a kind of stone
  26. 26.🧺 Do we need dry yeast for the yeast balloon? (a) not needed (b) needed
  27. 27.🔍 Which is the odd one out? (a) sugar (b) salt (c) warm water (d) time
  28. 28.🍞 Where is yeast used in the kitchen? (a) to colour rice (b) to clean floors (c) to wash dishes (d) to make bread rise
  29. 29.🧺 Do we need warm water for the yeast balloon? (a) not needed (b) needed
  30. 30.True or false: a balloon is needed for the yeast balloon. (a) True (b) False
  31. 31.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) a paper clip (b) sugar (c) warm water (d) a small bottle
  32. 32.🍞 Which of these is something yeast does not need? (a) time (b) sugar (c) warm water (d) a magnet
  33. 33.🔍 Which is the odd one out? (a) salt (b) sunlight (c) vinegar (d) sugar
  34. 34.⚖️ 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) False (b) True
  35. 35.🧺 Do we need a comb for the yeast balloon? (a) not needed (b) needed
  36. 36.🔮 Predict: you leave out the sugar. What happens to the balloon? (a) it grows much faster (b) it turns yellow (c) it grows very little (d) it bursts at once
  37. 37.🧺 Which of these is not needed for the yeast balloon? (a) sugar (b) warm water (c) a comb (d) dry yeast
  38. 38.🛟 The water for the yeast should be ___. (a) very salty (b) ice cold (c) warm, not hot (d) boiling hot
  39. 39.🧺 Which of these is not needed for the yeast balloon? (a) warm water (b) a small bottle (c) turmeric powder (d) sugar
  40. 40.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? True or false: the same bottles is what we measure. (a) True (b) False

Answer key

  1. True
  2. the water temperature
  3. sugar
  4. we measure it
  5. we keep it the same
  6. a comb
  7. turmeric powder
  8. not needed
  9. warm water
  10. vinegar
  11. salt
  12. False
  13. warm water
  14. a magnet
  15. not needed
  16. needed
  17. yeast does not need it
  18. pour it down the sink
  19. the amount of yeast
  20. a battery cell
  21. False
  22. a mirror
  23. time
  24. True
  25. a tiny living fungus
  26. needed
  27. salt
  28. to make bread rise
  29. needed
  30. True
  31. a paper clip
  32. a magnet
  33. sugar
  34. True
  35. not needed
  36. it grows very little
  37. a comb
  38. warm, not hot
  39. turmeric powder
  40. False

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