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Yeast Balloon Experiment Worksheet

Science experiments lesson 16: Yeast balloon · Set 540 · 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) warm water (b) sugar (c) salt (d) time
  2. 2.🔍 Which is the odd one out? (a) sunlight (b) vinegar (c) salt (d) warm water
  3. 3.🔍 Which is the odd one out? (a) a magnet (b) warm water (c) sugar (d) time
  4. 4.🧺 Which of these is needed for the yeast balloon? (a) a mirror (b) sugar (c) a paper clip (d) a battery cell
  5. 5.True or false: turmeric powder is needed for the yeast balloon. (a) True (b) False
  6. 6.🔮 Predict: you leave out the sugar. What happens to the balloon? (a) it turns yellow (b) it bursts at once (c) it grows very little (d) it grows much faster
  7. 7.🍞 Which of these is something yeast needs? (a) sugar (b) a magnet (c) sunlight (d) salt
  8. 8.🧺 Do we need a magnet for the yeast balloon? (a) needed (b) not needed
  9. 9.📘 What is yeast? (a) a kind of salt (b) a kind of stone (c) a kind of sugar (d) a tiny living fungus
  10. 10.🍞 Does yeast need sugar to make gas? (a) yeast needs it (b) yeast does not need it
  11. 11.⚖️ 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) True (b) False
  12. 12.True or false: vinegar is something yeast does not need. (a) True (b) False
  13. 13.True or false: a comb is not needed for the yeast balloon. (a) True (b) False
  14. 14.🔍 Which is the odd one out? (a) sunlight (b) a magnet (c) sugar (d) vinegar
  15. 15.True or false: a magnet is something yeast does not need. (a) True (b) False
  16. 16.🧺 Which of these is not needed for the yeast balloon? (a) warm water (b) a mirror (c) a balloon (d) sugar
  17. 17.🍞 Does yeast need salt to make gas? (a) yeast does not need it (b) yeast needs it
  18. 18.🛟 The water for the yeast should be ___. (a) boiling hot (b) ice cold (c) very salty (d) warm, not hot
  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.True or false: sugar is something yeast does not need. (a) True (b) False
  21. 21.🍞 Why do we add sugar to the yeast? (a) to make it sweet (b) it is food for yeast (c) to colour it (d) to make it heavy
  22. 22.⚖️ 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 amount of yeast (b) the water temperature (c) size of the balloon (d) the same bottles
  23. 23.🍞 Does yeast need time to make gas? (a) yeast does not need it (b) yeast needs it
  24. 24.🧺 Do we need dry yeast for the yeast balloon? (a) not needed (b) needed
  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 kept the same. (a) True (b) False
  26. 26.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) turmeric powder (b) a small bottle (c) dry yeast (d) a balloon
  27. 27.🍞 Which of these is something yeast does not need? (a) warm water (b) time (c) sugar (d) a magnet
  28. 28.🍞 Does yeast need vinegar to make gas? (a) yeast needs it (b) yeast does not need it
  29. 29.🧺 Do we need a balloon for the yeast balloon? (a) not needed (b) needed
  30. 30.True or false: a comb is needed for the yeast balloon. (a) True (b) False
  31. 31.True or false: a paper clip is not needed for the yeast balloon. (a) False (b) True
  32. 32.⚖️ 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 yeast (b) the amount of water (c) size of the balloon (d) the amount of sugar
  33. 33.⚖️ 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 measure it (b) we change it (c) we keep it the same
  34. 34.🧺 Do we need a paper clip for the yeast balloon? (a) not needed (b) needed
  35. 35.⚖️ 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 yeast (c) the water temperature
  36. 36.🍞 Where is yeast used in the kitchen? (a) to colour rice (b) to make bread rise (c) to clean floors (d) to wash dishes
  37. 37.🧺 Do we need warm water for the yeast balloon? (a) needed (b) not needed
  38. 38.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) warm water (b) sugar (c) dry yeast (d) a mirror
  39. 39.⚖️ 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
  40. 40.True or false: a magnet is needed for the yeast balloon. (a) True (b) False

Answer key

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

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