Yeast Balloon Experiment Worksheet

Science experiments lesson 16: Yeast balloon · Set 507 · 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.🛟 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
2. 2.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) sugar (b) a small bottle (c) a battery cell (d) dry yeast
3. 3.🍞 Which of these is something yeast does not need? (a) sugar (b) a magnet (c) time (d) warm water
4. 4.🧺 Which of these is needed for the yeast balloon? (a) a magnet (b) a battery cell (c) turmeric powder (d) a balloon
5. 5.🍞 Does yeast need warm water to make gas? (a) yeast does not need it (b) yeast needs it
6. 6.⚖️ 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) the amount of sugar (d) the amount of water
7. 7.True or false: a balloon is not needed for the yeast balloon. (a) False (b) True
8. 8.⚖️ 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 measure it (b) we change it (c) we keep it the same
9. 9.🧺 Which of these is not needed for the yeast balloon? (a) dry yeast (b) a balloon (c) sugar (d) a magnet
10. 10.🍞 Which of these is something yeast needs? (a) a magnet (b) time (c) salt (d) vinegar
11. 11.⚖️ 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) True (b) False
12. 12.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) a small bottle (b) turmeric powder (c) warm water (d) a balloon
13. 13.📘 What is yeast? (a) a kind of stone (b) a kind of salt (c) a tiny living fungus (d) a kind of sugar
14. 14.True or false: sunlight is something yeast needs. (a) True (b) False
15. 15.🍞 Does yeast need time to make gas? (a) yeast does not need it (b) yeast needs it
16. 16.🍞 Which of these is something yeast does not need? (a) sugar (b) time (c) warm water (d) vinegar
17. 17.🔍 Which is the odd one out? (a) sugar (b) salt (c) time (d) warm water
18. 18.🔍 Which is the odd one out? (a) warm water (b) vinegar (c) sunlight (d) salt
19. 19.⚖️ 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) False (b) True
20. 20.🧺 Do we need dry yeast for the yeast balloon? (a) needed (b) not needed
21. 21.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? True or false: the amount of water is kept the same. (a) False (b) True
22. 22.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) warm water (b) sugar (c) a small bottle (d) a magnet
23. 23.⚖️ 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 keep it the same (b) we change it (c) we measure it
24. 24.⚖️ 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 change it (b) we keep it the same (c) we measure it
25. 25.True or false: vinegar is something yeast needs. (a) False (b) True
26. 26.🧺 Do we need sugar for the yeast balloon? (a) not needed (b) needed
27. 27.🔍 Which is the odd one out? (a) sunlight (b) time (c) vinegar (d) a magnet
28. 28.⚖️ 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 keep it the same (b) we change it (c) we measure it
29. 29.True or false: a mirror is not needed for the yeast balloon. (a) False (b) True
30. 30.True or false: a small bottle is not needed for the yeast balloon. (a) False (b) True
31. 31.🍞 Why does yeast work slowly in cold water? (a) cold water is heavy (b) cold slows yeast down (c) cold makes it pink (d) cold kills sugar
32. 32.🔍 Which is the odd one out? (a) warm water (b) time (c) sugar (d) sunlight
33. 33.🧺 Which of these is needed for the yeast balloon? (a) a comb (b) turmeric powder (c) a magnet (d) dry yeast
34. 34.⚖️ 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 water (b) size of the balloon (c) the water temperature (d) the amount of yeast
35. 35.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? True or false: the same bottles is what we measure. (a) True (b) False
36. 36.🍞 Which of these is something yeast does not need? (a) warm water (b) sugar (c) time (d) salt
37. 37.🧺 Which of these is not needed for the yeast balloon? (a) a comb (b) dry yeast (c) a small bottle (d) a balloon
38. 38.True or false: sunlight is something yeast does not need. (a) True (b) False
39. 39.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) a small bottle (b) a comb (c) sugar (d) dry yeast
40. 40.🧺 Do we need a small bottle for the yeast balloon? (a) needed (b) not needed

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