← Yeast balloon lesson New set →

Yeast Balloon Experiment Worksheet

Science experiments lesson 16: Yeast balloon · Set 591 · 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.🍞 Does yeast need warm water to make gas? (a) yeast needs it (b) yeast does not need it
  2. 2.🛟 The water for the yeast should be ___. (a) warm, not hot (b) very salty (c) ice cold (d) boiling hot
  3. 3.🔮 Predict (do not try it): yeast is put in boiling water. What happens? (a) the yeast is killed (b) it glows (c) it turns to sugar (d) it grows faster
  4. 4.🍞 Which of these is something yeast needs? (a) vinegar (b) a magnet (c) time (d) sunlight
  5. 5.⚖️ 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 same bottles (b) the amount of sugar (c) the water temperature (d) the amount of water
  6. 6.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? Which of these is kept the same? (a) size of the balloon (b) the amount of water (c) the water temperature
  7. 7.⚖️ 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
  8. 8.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? True or false: the amount of yeast is what we measure. (a) True (b) False
  9. 9.🧺 Do we need turmeric powder for the yeast balloon? (a) not needed (b) needed
  10. 10.🧺 Which of these is not needed for the yeast balloon? (a) a battery cell (b) a balloon (c) warm water (d) sugar
  11. 11.🧺 Do we need warm water for the yeast balloon? (a) not needed (b) needed
  12. 12.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? True or false: the amount of sugar is kept the same. (a) False (b) True
  13. 13.🔍 Which is the odd one out? (a) time (b) a magnet (c) vinegar (d) sunlight
  14. 14.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) a small bottle (b) sugar (c) a magnet (d) a balloon
  15. 15.True or false: dry yeast is needed for the yeast balloon. (a) True (b) False
  16. 16.True or false: warm water is not needed for the yeast balloon. (a) False (b) True
  17. 17.🧺 Do we need a mirror for the yeast balloon? (a) needed (b) not needed
  18. 18.True or false: warm water is something yeast needs. (a) True (b) False
  19. 19.🍞 Which of these is something yeast does not need? (a) time (b) warm water (c) sunlight (d) sugar
  20. 20.🧺 Do we need a balloon for the yeast balloon? (a) needed (b) not needed
  21. 21.🔍 Which is the odd one out? (a) vinegar (b) warm water (c) sugar (d) time
  22. 22.🔍 Which is the odd one out? (a) warm water (b) time (c) a magnet (d) sugar
  23. 23.🧺 Do we need a small bottle for the yeast balloon? (a) needed (b) not needed
  24. 24.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) sugar (b) dry yeast (c) a small bottle (d) a battery cell
  25. 25.🛟 After the yeast experiment, what should you do with the mixture? (a) throw it at a wall (b) put it in your mouth (c) keep it for a month (d) pour it down the sink
  26. 26.🧺 Which of these is needed for the yeast balloon? (a) a paper clip (b) a comb (c) warm water (d) turmeric powder
  27. 27.True or false: sugar is something yeast needs. (a) True (b) False
  28. 28.True or false: a comb is not needed for the yeast balloon. (a) True (b) False
  29. 29.🍞 Does yeast need vinegar to make gas? (a) yeast needs it (b) yeast does not need it
  30. 30.🍞 Where is yeast used in the kitchen? (a) to wash dishes (b) to make bread rise (c) to clean floors (d) to colour rice
  31. 31.True or false: a paper clip is not needed for the yeast balloon. (a) True (b) False
  32. 32.True or false: a comb is needed for the yeast balloon. (a) True (b) False
  33. 33.🍞 Which of these is something yeast needs? (a) warm water (b) salt (c) vinegar (d) a magnet
  34. 34.⚖️ 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 change it (c) we keep it the same
  35. 35.🍞 Does yeast need salt to make gas? (a) yeast needs it (b) yeast does not need it
  36. 36.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? Which of these is kept the same? (a) size of the balloon (b) the same bottles (c) the water temperature
  37. 37.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) a mirror (b) sugar (c) warm water (d) a small bottle
  38. 38.🔮 Predict: you wait 2 hours instead of 10 minutes. What happens? (a) it turns to bread (b) it shrinks to nothing (c) the balloon is bigger (d) the balloon is smaller
  39. 39.⚖️ 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
  40. 40.🍞 Which of these is something yeast does not need? (a) warm water (b) time (c) sugar (d) vinegar

Answer key

  1. yeast needs it
  2. warm, not hot
  3. the yeast is killed
  4. time
  5. the water temperature
  6. the amount of water
  7. False
  8. False
  9. not needed
  10. a battery cell
  11. needed
  12. True
  13. time
  14. a magnet
  15. True
  16. False
  17. not needed
  18. True
  19. sunlight
  20. needed
  21. vinegar
  22. a magnet
  23. needed
  24. a battery cell
  25. pour it down the sink
  26. warm water
  27. True
  28. True
  29. yeast does not need it
  30. to make bread rise
  31. True
  32. False
  33. warm water
  34. we change it
  35. yeast does not need it
  36. the same bottles
  37. a mirror
  38. the balloon is bigger
  39. we keep it the same
  40. vinegar

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