← Yeast balloon lesson New set →

Yeast Balloon Experiment Worksheet

Science experiments lesson 16: Yeast balloon · Set 802 · 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 magnet is needed for the yeast balloon. (a) False (b) True
  2. 2.🍞 Which of these is something yeast does not need? (a) warm water (b) salt (c) time (d) sugar
  3. 3.🧺 Do we need a mirror for the yeast balloon? (a) needed (b) not needed
  4. 4.🧺 Which of these is not needed for the yeast balloon? (a) warm water (b) a balloon (c) a small bottle (d) a magnet
  5. 5.🧺 Which of these is needed for the yeast balloon? (a) turmeric powder (b) a paper clip (c) a small bottle (d) a mirror
  6. 6.🎈 What blows up the balloon in the yeast experiment? (a) smoke (b) air from outside (c) carbon dioxide gas (d) steam
  7. 7.True or false: sunlight is something yeast needs. (a) True (b) False
  8. 8.🍞 Where is yeast used in the kitchen? (a) to make bread rise (b) to colour rice (c) to clean floors (d) to wash dishes
  9. 9.True or false: sugar is needed for the yeast balloon. (a) True (b) False
  10. 10.🔮 Predict: you leave out the sugar. What happens to the balloon? (a) it grows very little (b) it turns yellow (c) it bursts at once (d) it grows much faster
  11. 11.🍞 Which of these is something yeast does not need? (a) time (b) vinegar (c) sugar (d) warm water
  12. 12.🍞 Which of these is something yeast needs? (a) warm water (b) a magnet (c) sunlight (d) salt
  13. 13.🍞 Does yeast need vinegar to make gas? (a) yeast does not need it (b) yeast needs it
  14. 14.📘 What is yeast? (a) a kind of stone (b) a kind of salt (c) a tiny living fungus (d) a kind of sugar
  15. 15.🧺 Do we need dry yeast for the yeast balloon? (a) needed (b) not needed
  16. 16.🔍 Which is the odd one out? (a) warm water (b) sugar (c) time (d) salt
  17. 17.🧺 Do we need a magnet for the yeast balloon? (a) not needed (b) needed
  18. 18.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) a comb (b) warm water (c) a balloon (d) dry yeast
  19. 19.🛟 The water for the yeast should be ___. (a) boiling hot (b) very salty (c) warm, not hot (d) ice cold
  20. 20.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) warm water (b) a balloon (c) a mirror (d) sugar
  21. 21.🔮 Predict (do not try it): yeast is put in boiling water. What happens? (a) the yeast is killed (b) it turns to sugar (c) it grows faster (d) it glows
  22. 22.🧺 Which of these is not needed for the yeast balloon? (a) a balloon (b) dry yeast (c) a comb (d) warm water
  23. 23.True or false: sugar is not needed for the yeast balloon. (a) False (b) True
  24. 24.🧺 Do we need a battery cell for the yeast balloon? (a) needed (b) not needed
  25. 25.True or false: salt is something yeast does not need. (a) False (b) True
  26. 26.🧺 Do we need a balloon for the yeast balloon? (a) needed (b) not needed
  27. 27.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? True or false: the water temperature is the one thing we change. (a) True (b) False
  28. 28.True or false: a mirror is needed for the yeast balloon. (a) False (b) True
  29. 29.⚖️ 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
  30. 30.True or false: warm water is something yeast does not need. (a) False (b) True
  31. 31.⚖️ 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
  32. 32.⚖️ 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) True (b) False
  33. 33.🍞 Which of these is something yeast does not need? (a) sunlight (b) time (c) sugar (d) warm water
  34. 34.True or false: dry yeast is needed for the yeast balloon. (a) False (b) True
  35. 35.🧺 Do we need warm water for the yeast balloon? (a) not needed (b) needed
  36. 36.⚖️ 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 change it (c) we measure it
  37. 37.True or false: a comb is needed for the yeast balloon. (a) False (b) True
  38. 38.⚖️ 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 amount of yeast (d) the amount of water
  39. 39.🔍 Which is the odd one out? (a) vinegar (b) sunlight (c) warm water (d) a magnet
  40. 40.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) turmeric powder (b) a small bottle (c) a balloon (d) dry yeast

Answer key

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

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