← Yeast balloon lesson New set →

Yeast Balloon Experiment Worksheet

Science experiments lesson 16: Yeast balloon · Set 514 · 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.True or false: a small bottle is needed for the yeast balloon. (a) False (b) True
  2. 2.🧺 Do we need a paper clip for the yeast balloon? (a) not needed (b) needed
  3. 3.True or false: turmeric powder is needed for the yeast balloon. (a) True (b) False
  4. 4.🍞 Why do we add sugar to the yeast? (a) to make it heavy (b) to make it sweet (c) to colour it (d) it is food for yeast
  5. 5.True or false: a magnet is something yeast does not need. (a) False (b) True
  6. 6.🧺 Which of these is needed for the yeast balloon? (a) a mirror (b) warm water (c) turmeric powder (d) a magnet
  7. 7.🔍 Which is the odd one out? (a) sugar (b) salt (c) time (d) warm water
  8. 8.🍞 Does yeast need a magnet to make gas? (a) yeast needs it (b) yeast does not need it
  9. 9.🍞 Does yeast need salt to make gas? (a) yeast needs it (b) yeast does not need it
  10. 10.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) warm water (b) sugar (c) dry yeast (d) a comb
  11. 11.True or false: vinegar is something yeast does not need. (a) True (b) False
  12. 12.True or false: a mirror is not needed for the yeast balloon. (a) False (b) True
  13. 13.🍞 Where is yeast used in the kitchen? (a) to colour rice (b) to clean floors (c) to make bread rise (d) to wash dishes
  14. 14.🧺 Do we need a small bottle for the yeast balloon? (a) needed (b) not needed
  15. 15.🔮 Predict: you wait 2 hours instead of 10 minutes. What happens? (a) it shrinks to nothing (b) the balloon is bigger (c) the balloon is smaller (d) it turns to bread
  16. 16.🧺 Which of these is not needed for the yeast balloon? (a) dry yeast (b) warm water (c) a paper clip (d) sugar
  17. 17.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? True or false: the amount of sugar is what we measure. (a) True (b) False
  18. 18.🧺 Do we need a magnet for the yeast balloon? (a) needed (b) not needed
  19. 19.⚖️ 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) True (b) False
  20. 20.🍞 Does yeast need time to make gas? (a) yeast needs it (b) yeast does not need it
  21. 21.True or false: sugar is something yeast does not need. (a) True (b) False
  22. 22.🛟 The water for the yeast should be ___. (a) very salty (b) warm, not hot (c) boiling hot (d) ice cold
  23. 23.🧺 Which of these is not needed for the yeast balloon? (a) sugar (b) a balloon (c) turmeric powder (d) a small bottle
  24. 24.🧺 Do we need a comb for the yeast balloon? (a) not needed (b) needed
  25. 25.🍞 Which of these is something yeast needs? (a) warm water (b) sunlight (c) salt (d) a magnet
  26. 26.🛟 After the yeast experiment, what should you do with the mixture? (a) put it in your mouth (b) keep it for a month (c) throw it at a wall (d) pour it down the sink
  27. 27.🍞 Which of these is something yeast does not need? (a) warm water (b) sunlight (c) time (d) sugar
  28. 28.📘 What is yeast? (a) a kind of sugar (b) a kind of stone (c) a tiny living fungus (d) a kind of salt
  29. 29.⚖️ 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
  30. 30.🧺 Do we need a balloon for the yeast balloon? (a) not needed (b) needed
  31. 31.True or false: a battery cell is not needed for the yeast balloon. (a) True (b) False
  32. 32.🍞 Does yeast need sunlight to make gas? (a) yeast does not need it (b) yeast needs it
  33. 33.🔍 Which is the odd one out? (a) salt (b) vinegar (c) sugar (d) a magnet
  34. 34.🧺 Do we need a mirror for the yeast balloon? (a) needed (b) not needed
  35. 35.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? True or false: the same bottles is the one thing we change. (a) False (b) True
  36. 36.🍞 Why does yeast work slowly in cold water? (a) cold kills sugar (b) cold makes it pink (c) cold water is heavy (d) cold slows yeast down
  37. 37.True or false: dry yeast is needed for the yeast balloon. (a) True (b) False
  38. 38.True or false: sugar is not needed for the yeast balloon. (a) True (b) False
  39. 39.🧺 Which of these is needed for the yeast balloon? (a) a battery cell (b) a paper clip (c) a mirror (d) sugar
  40. 40.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? True or false: the amount of sugar is the one thing we change. (a) True (b) False

Answer key

  1. True
  2. not needed
  3. False
  4. it is food for yeast
  5. True
  6. warm water
  7. salt
  8. yeast does not need it
  9. yeast does not need it
  10. a comb
  11. True
  12. True
  13. to make bread rise
  14. needed
  15. the balloon is bigger
  16. a paper clip
  17. False
  18. not needed
  19. True
  20. yeast needs it
  21. False
  22. warm, not hot
  23. turmeric powder
  24. not needed
  25. warm water
  26. pour it down the sink
  27. sunlight
  28. a tiny living fungus
  29. True
  30. needed
  31. True
  32. yeast does not need it
  33. sugar
  34. not needed
  35. False
  36. cold slows yeast down
  37. True
  38. False
  39. sugar
  40. False

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