← Yeast balloon lesson New set →

Yeast Balloon Experiment Worksheet

Science experiments lesson 16: Yeast balloon · Set 826 · 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.🧺 Do we need a paper clip for the yeast balloon? (a) not needed (b) needed
  2. 2.🍞 Does yeast need vinegar to make gas? (a) yeast needs it (b) yeast does not need it
  3. 3.🍞 Does yeast need sunlight to make gas? (a) yeast does not need it (b) yeast needs it
  4. 4.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) dry yeast (b) a small bottle (c) warm water (d) turmeric powder
  5. 5.🛟 The water for the yeast should be ___. (a) very salty (b) warm, not hot (c) ice cold (d) boiling hot
  6. 6.⚖️ 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 water (b) the amount of yeast (c) size of the balloon (d) the amount of sugar
  7. 7.⚖️ 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 sugar (c) size of the balloon
  8. 8.True or false: a battery cell is needed for the yeast balloon. (a) True (b) False
  9. 9.🍞 Does yeast need salt to make gas? (a) yeast needs it (b) yeast does not need it
  10. 10.⚖️ 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 measure it (c) we keep it the same
  11. 11.🍞 Does yeast need time to make gas? (a) yeast does not need it (b) yeast needs it
  12. 12.🍞 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
  13. 13.⚖️ 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
  14. 14.🔍 Which is the odd one out? (a) time (b) a magnet (c) sugar (d) warm water
  15. 15.True or false: a balloon is needed for the yeast balloon. (a) False (b) True
  16. 16.⚖️ 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
  17. 17.True or false: a comb is needed for the yeast balloon. (a) True (b) False
  18. 18.🍞 Does yeast need warm water to make gas? (a) yeast does not need it (b) yeast needs it
  19. 19.🔍 Which is the odd one out? (a) sunlight (b) salt (c) vinegar (d) sugar
  20. 20.🧺 Which of these is needed for the yeast balloon? (a) a paper clip (b) a magnet (c) dry yeast (d) turmeric powder
  21. 21.⚖️ 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 water (b) the water temperature (c) size of the balloon
  22. 22.🧺 Which of these is not needed for the yeast balloon? (a) warm water (b) a paper clip (c) a balloon (d) dry yeast
  23. 23.🍞 Does yeast need a magnet to make gas? (a) yeast needs it (b) yeast does not need it
  24. 24.🍞 Which of these is something yeast does not need? (a) warm water (b) time (c) salt (d) sugar
  25. 25.⚖️ 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) True (b) False
  26. 26.🧺 Do we need a balloon for the yeast balloon? (a) needed (b) not needed
  27. 27.🔍 Which is the odd one out? (a) warm water (b) salt (c) a magnet (d) vinegar
  28. 28.🛟 After the yeast experiment, what should you do with the mixture? (a) throw it at a wall (b) keep it for a month (c) pour it down the sink (d) put it in your mouth
  29. 29.True or false: a magnet is not needed for the yeast balloon. (a) True (b) False
  30. 30.🔮 Predict: you leave out the sugar. What happens to the balloon? (a) it turns yellow (b) it grows very little (c) it bursts at once (d) it grows much faster
  31. 31.⚖️ 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 keep it the same (b) we measure it (c) we change it
  32. 32.True or false: a small bottle is needed for the yeast balloon. (a) True (b) False
  33. 33.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? True or false: the amount of water is the one thing we change. (a) False (b) True
  34. 34.True or false: sunlight is something yeast needs. (a) True (b) False
  35. 35.True or false: time is something yeast needs. (a) True (b) False
  36. 36.True or false: salt is something yeast needs. (a) False (b) True
  37. 37.🧺 Which of these is not needed for the yeast balloon? (a) sugar (b) a magnet (c) a small bottle (d) dry yeast
  38. 38.🔍 Which is the odd one out? (a) time (b) sugar (c) salt (d) warm water
  39. 39.🧺 Do we need dry yeast for the yeast balloon? (a) needed (b) not needed
  40. 40.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) a magnet (b) a balloon (c) warm water (d) dry yeast

Answer key

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

Free science experiments lessons, practice and worksheets at talentjr.in/science-experiments-for-kids