Yeast Balloon Experiment Worksheet

Science experiments lesson 16: Yeast balloon · Set 982 · 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.🧺 Do we need turmeric powder for the yeast balloon? (a) needed (b) not needed
2. 2.True or false: a paper clip is not needed for the yeast balloon. (a) True (b) False
3. 3.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? What do we do with “the amount of yeast”? (a) we change it (b) we measure it (c) we keep it the same
4. 4.⚖️ 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 water temperature (b) the amount of water (c) the amount of sugar (d) the amount of yeast
5. 5.🍞 Which of these is something yeast needs? (a) vinegar (b) salt (c) sugar (d) a magnet
6. 6.🔍 Which is the odd one out? (a) time (b) warm water (c) a magnet (d) sugar
7. 7.🍞 Where is yeast used in the kitchen? (a) to colour rice (b) to make bread rise (c) to wash dishes (d) to clean floors
8. 8.🧺 Do we need sugar for the yeast balloon? (a) needed (b) not needed
9. 9.🧺 Do we need a mirror for the yeast balloon? (a) needed (b) not needed
10. 10.🍞 Does yeast need a magnet to make gas? (a) yeast needs it (b) yeast does not need it
11. 11.🧺 Do we need a balloon for the yeast balloon? (a) needed (b) not needed
12. 12.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) a balloon (b) warm water (c) turmeric powder (d) a small bottle
13. 13.True or false: a small bottle is not needed for the yeast balloon. (a) False (b) True
14. 14.⚖️ 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 change it (b) we keep it the same (c) we measure it
15. 15.True or false: salt is something yeast does not need. (a) True (b) False
16. 16.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? What do we do with “the amount of water”? (a) we measure it (b) we change it (c) we keep it the same
17. 17.True or false: turmeric powder is not needed for the yeast balloon. (a) False (b) True
18. 18.True or false: dry yeast is needed for the yeast balloon. (a) False (b) True
19. 19.🛟 After the yeast experiment, what should you do with the mixture? (a) put it in your mouth (b) keep it for a month (c) pour it down the sink (d) throw it at a wall
20. 20.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) dry yeast (b) a mirror (c) warm water (d) sugar
21. 21.🔍 Which is the odd one out? (a) sugar (b) warm water (c) time (d) sunlight
22. 22.🍞 Does yeast need warm water to make gas? (a) yeast does not need it (b) yeast needs it
23. 23.🧺 Do we need a small bottle for the yeast balloon? (a) not needed (b) needed
24. 24.🍞 Does yeast need sunlight to make gas? (a) yeast does not need it (b) yeast needs it
25. 25.🧺 Which of these is needed for the yeast balloon? (a) turmeric powder (b) a small bottle (c) a magnet (d) a mirror
26. 26.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) a small bottle (b) a balloon (c) warm water (d) a battery cell
27. 27.⚖️ 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 keep it the same (b) we change it (c) we measure it
28. 28.🍞 Which of these is something yeast does not need? (a) sugar (b) warm water (c) time (d) vinegar
29. 29.True or false: a comb is not needed for the yeast balloon. (a) False (b) True
30. 30.True or false: a battery cell is needed for the yeast balloon. (a) True (b) False
31. 31.🧺 Which of these is needed for the yeast balloon? (a) sugar (b) a magnet (c) turmeric powder (d) a paper clip
32. 32.⚖️ 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) False (b) True
33. 33.🧺 Do we need a battery cell for the yeast balloon? (a) not needed (b) needed
34. 34.True or false: warm water is needed for the yeast balloon. (a) True (b) False
35. 35.🛟 The water for the yeast should be ___. (a) ice cold (b) boiling hot (c) very salty (d) warm, not hot
36. 36.🍞 Does yeast need sugar to make gas? (a) yeast does not need it (b) yeast needs it
37. 37.True or false: a balloon is not needed for the yeast balloon. (a) False (b) True
38. 38.True or false: a magnet 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) turmeric powder (c) a mirror (d) warm water
40. 40.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) a balloon (b) sugar (c) a small bottle (d) a paper clip

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