← Yeast balloon lesson New set →

Yeast Balloon Experiment Worksheet

Science experiments lesson 16: Yeast balloon · Set 133 · 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? What do we do with “the water temperature”? (a) we keep it the same (b) we measure it (c) we change it
  2. 2.🧺 Which of these is needed for the yeast balloon? (a) a small bottle (b) a paper clip (c) turmeric powder (d) a battery cell
  3. 3.🍞 Does yeast need sugar to make gas? (a) yeast does not need it (b) yeast needs it
  4. 4.True or false: a balloon is needed for the yeast balloon. (a) True (b) False
  5. 5.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? Which of these is kept the same? (a) the same bottles (b) size of the balloon (c) the water temperature
  6. 6.⚖️ 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) True (b) False
  7. 7.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) dry yeast (b) a balloon (c) a magnet (d) a small bottle
  8. 8.🍞 Does yeast need salt to make gas? (a) yeast does not need it (b) yeast needs it
  9. 9.🧺 Do we need sugar for the yeast balloon? (a) not needed (b) needed
  10. 10.🍞 Which of these is something yeast needs? (a) time (b) sunlight (c) vinegar (d) salt
  11. 11.🛟 The water for the yeast should be ___. (a) very salty (b) boiling hot (c) ice cold (d) warm, not hot
  12. 12.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) a balloon (b) a mirror (c) dry yeast (d) sugar
  13. 13.🧺 Do we need a mirror for the yeast balloon? (a) not needed (b) needed
  14. 14.True or false: a magnet is not needed for the yeast balloon. (a) False (b) True
  15. 15.🍞 Does yeast need time to make gas? (a) yeast does not need it (b) yeast needs it
  16. 16.🎈 What blows up the balloon in the yeast experiment? (a) steam (b) air from outside (c) smoke (d) carbon dioxide gas
  17. 17.True or false: a balloon is not needed for the yeast balloon. (a) True (b) False
  18. 18.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) a balloon (b) a small bottle (c) turmeric powder (d) dry yeast
  19. 19.🛟 After the yeast experiment, what should you do with the mixture? (a) put it in your mouth (b) throw it at a wall (c) pour it down the sink (d) keep it for a month
  20. 20.True or false: vinegar is something yeast needs. (a) True (b) False
  21. 21.🔍 Which is the odd one out? (a) warm water (b) a magnet (c) vinegar (d) salt
  22. 22.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) sugar (b) warm water (c) a small bottle (d) a paper clip
  23. 23.True or false: a small bottle is not needed for the yeast balloon. (a) True (b) False
  24. 24.⚖️ 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
  25. 25.True or false: sunlight is something yeast needs. (a) False (b) True
  26. 26.⚖️ 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
  27. 27.True or false: time is something yeast does not need. (a) False (b) True
  28. 28.🍞 Which of these is something yeast needs? (a) salt (b) a magnet (c) warm water (d) vinegar
  29. 29.🔍 Which is the odd one out? (a) a magnet (b) sugar (c) time (d) warm water
  30. 30.🔮 Predict (do not try it): yeast is put in boiling water. What happens? (a) it turns to sugar (b) it grows faster (c) the yeast is killed (d) it glows
  31. 31.🔮 Predict: you leave out the sugar. What happens to the balloon? (a) it grows much faster (b) it grows very little (c) it bursts at once (d) it turns yellow
  32. 32.🔍 Which is the odd one out? (a) time (b) sugar (c) warm water (d) salt
  33. 33.⚖️ 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
  34. 34.True or false: a magnet is needed for the yeast balloon. (a) True (b) False
  35. 35.🧺 Do we need turmeric powder for the yeast balloon? (a) needed (b) not needed
  36. 36.🧺 Do we need warm water for the yeast balloon? (a) needed (b) not needed
  37. 37.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? Which of these is what we measure? (a) size of the balloon (b) the water temperature (c) the same bottles (d) the amount of yeast
  38. 38.True or false: salt is something yeast does not need. (a) False (b) True
  39. 39.📘 What is yeast? (a) a kind of stone (b) a kind of sugar (c) a kind of salt (d) a tiny living fungus
  40. 40.🍞 Which of these is something yeast does not need? (a) a magnet (b) time (c) sugar (d) warm water

Answer key

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

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