← Yeast balloon lesson New set →

Yeast Balloon Experiment Worksheet

Science experiments lesson 16: Yeast balloon · Set 296 · 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) salt (b) sugar (c) a magnet (d) sunlight
  2. 2.🧺 Do we need a paper clip for the yeast balloon? (a) not needed (b) needed
  3. 3.True or false: salt is something yeast needs. (a) True (b) False
  4. 4.🧺 Which of these is needed for the yeast balloon? (a) dry yeast (b) turmeric powder (c) a mirror (d) a magnet
  5. 5.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? Which of these is what we measure? (a) the same bottles (b) the amount of water (c) the water temperature (d) size of the balloon
  6. 6.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) sugar (b) a balloon (c) a mirror (d) a small bottle
  7. 7.🔮 Predict (do not try it): yeast is put in boiling water. What happens? (a) it grows faster (b) it glows (c) the yeast is killed (d) it turns to sugar
  8. 8.🛟 After the yeast experiment, what should you do with the mixture? (a) pour it down the sink (b) keep it for a month (c) throw it at a wall (d) put it in your mouth
  9. 9.🧺 Which of these is not needed for the yeast balloon? (a) a comb (b) a balloon (c) sugar (d) dry yeast
  10. 10.🧺 Do we need a magnet for the yeast balloon? (a) not needed (b) needed
  11. 11.🔮 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
  12. 12.🍞 Which of these is something yeast does not need? (a) sugar (b) warm water (c) vinegar (d) time
  13. 13.🍞 Why does yeast work slowly in cold water? (a) cold slows yeast down (b) cold makes it pink (c) cold kills sugar (d) cold water is heavy
  14. 14.🧺 Do we need a balloon for the yeast balloon? (a) needed (b) not needed
  15. 15.True or false: dry yeast is needed for the yeast balloon. (a) True (b) False
  16. 16.True or false: vinegar is something yeast does not need. (a) True (b) False
  17. 17.🧺 Do we need a mirror for the yeast balloon? (a) not needed (b) needed
  18. 18.⚖️ 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
  19. 19.True or false: sugar is something yeast needs. (a) True (b) False
  20. 20.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) a small bottle (b) dry yeast (c) turmeric powder (d) sugar
  21. 21.🧺 Which of these is needed for the yeast balloon? (a) a paper clip (b) a mirror (c) a balloon (d) a comb
  22. 22.🍞 Does yeast need vinegar to make gas? (a) yeast needs it (b) yeast does not need it
  23. 23.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) a balloon (b) a small bottle (c) a paper clip (d) dry yeast
  24. 24.🍞 Does yeast need warm water to make gas? (a) yeast does not need it (b) yeast needs it
  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 the one thing we change. (a) False (b) True
  26. 26.True or false: sugar is something yeast does not need. (a) False (b) True
  27. 27.🎈 What blows up the balloon in the yeast experiment? (a) carbon dioxide gas (b) steam (c) air from outside (d) smoke
  28. 28.🍞 Which of these is something yeast does not need? (a) sunlight (b) warm water (c) sugar (d) time
  29. 29.True or false: sunlight is something yeast does not need. (a) True (b) False
  30. 30.⚖️ 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) size of the balloon (c) the same bottles
  31. 31.🧺 Which of these is needed for the yeast balloon? (a) a magnet (b) sugar (c) a mirror (d) a battery cell
  32. 32.True or false: a magnet is needed for the yeast balloon. (a) True (b) False
  33. 33.True or false: warm water is not needed for the yeast balloon. (a) True (b) False
  34. 34.🧺 Which of these is not needed for the yeast balloon? (a) dry yeast (b) warm water (c) a balloon (d) a magnet
  35. 35.🧺 Do we need turmeric powder for the yeast balloon? (a) not needed (b) needed
  36. 36.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) warm water (b) a balloon (c) dry yeast (d) a battery cell
  37. 37.⚖️ 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) False (b) True
  38. 38.⚖️ 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
  39. 39.True or false: a magnet is something yeast needs. (a) False (b) True
  40. 40.🛟 The water for the yeast should be ___. (a) boiling hot (b) very salty (c) ice cold (d) warm, not hot

Answer key

  1. sugar
  2. not needed
  3. False
  4. dry yeast
  5. size of the balloon
  6. a mirror
  7. the yeast is killed
  8. pour it down the sink
  9. a comb
  10. not needed
  11. it grows very little
  12. vinegar
  13. cold slows yeast down
  14. needed
  15. True
  16. True
  17. not needed
  18. we keep it the same
  19. True
  20. turmeric powder
  21. a balloon
  22. yeast does not need it
  23. a paper clip
  24. yeast needs it
  25. False
  26. False
  27. carbon dioxide gas
  28. sunlight
  29. True
  30. the same bottles
  31. sugar
  32. False
  33. False
  34. a magnet
  35. not needed
  36. a battery cell
  37. True
  38. we keep it the same
  39. False
  40. warm, not hot

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