Yeast Balloon Experiment Worksheet

Science experiments lesson 16: Yeast balloon · Set 178 · 40 questions

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.

1. 1.🧺 Which of these is not needed for the yeast balloon? (a) turmeric powder (b) dry yeast (c) a balloon (d) warm water
2. 2.🔍 Which is the odd one out? (a) time (b) a magnet (c) sunlight (d) salt
3. 3.🍞 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
4. 4.True or false: a magnet is something yeast needs. (a) False (b) True
5. 5.🧺 Do we need a balloon for the yeast balloon? (a) not needed (b) needed
6. 6.🧺 Do we need sugar for the yeast balloon? (a) not needed (b) needed
7. 7.⚖️ 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) size of the balloon (b) the water temperature (c) the amount of sugar (d) the amount of yeast
8. 8.True or false: time is something yeast needs. (a) True (b) False
9. 9.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? Which of these is what we measure? (a) the water temperature (b) the same bottles (c) size of the balloon (d) the amount of sugar
10. 10.⚖️ 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) True (b) False
11. 11.🧺 Do we need a paper clip for the yeast balloon? (a) not needed (b) needed
12. 12.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) warm water (b) a paper clip (c) sugar (d) dry yeast
13. 13.🔍 Which is the odd one out? (a) time (b) warm water (c) salt (d) sugar
14. 14.🔍 Which is the odd one out? (a) salt (b) a magnet (c) sunlight (d) warm water
15. 15.🍞 Does yeast need time to make gas? (a) yeast needs it (b) yeast does not need it
16. 16.🍞 Which of these is something yeast does not need? (a) a magnet (b) sugar (c) time (d) warm water
17. 17.True or false: warm water is something yeast needs. (a) False (b) True
18. 18.🧺 Which of these is not needed for the yeast balloon? (a) a mirror (b) a small bottle (c) a balloon (d) warm water
19. 19.🧺 Which of these is not needed for the yeast balloon? (a) a small bottle (b) a balloon (c) dry yeast (d) a magnet
20. 20.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) warm water (b) dry yeast (c) a balloon (d) a battery cell
21. 21.True or false: sugar is needed for the yeast balloon. (a) True (b) False
22. 22.🧺 Do we need a battery cell for the yeast balloon? (a) needed (b) not needed
23. 23.🛟 The water for the yeast should be ___. (a) boiling hot (b) warm, not hot (c) ice cold (d) very salty
24. 24.🧺 Do we need dry yeast for the yeast balloon? (a) not needed (b) needed
25. 25.🧺 Which of these is not needed for the yeast balloon? (a) a comb (b) a balloon (c) sugar (d) dry yeast
26. 26.🍞 Which of these is something yeast does not need? (a) warm water (b) salt (c) time (d) sugar
27. 27.⚖️ 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) False (b) True
28. 28.⚖️ 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
29. 29.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? What do we do with “the same bottles”? (a) we change it (b) we keep it the same (c) we measure it
30. 30.True or false: turmeric powder is needed for the yeast balloon. (a) True (b) False
31. 31.🛟 After the yeast experiment, what should you do with the mixture? (a) put it in your mouth (b) throw it at a wall (c) keep it for a month (d) pour it down the sink
32. 32.🔍 Which is the odd one out? (a) time (b) warm water (c) sugar (d) sunlight
33. 33.⚖️ 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
34. 34.🍞 Does yeast need sunlight to make gas? (a) yeast does not need it (b) yeast needs it
35. 35.🧺 Do we need turmeric powder for the yeast balloon? (a) needed (b) not needed
36. 36.🧺 Which of these is needed for the yeast balloon? (a) dry yeast (b) turmeric powder (c) a battery cell (d) a comb
37. 37.🍞 Does yeast need a magnet to make gas? (a) yeast does not need it (b) yeast needs it
38. 38.True or false: salt is something yeast needs. (a) False (b) True
39. 39.🍞 Does yeast need salt to make gas? (a) yeast does not need it (b) yeast needs it
40. 40.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) a balloon (b) warm water (c) dry yeast (d) a magnet

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