Yeast Balloon Experiment Worksheet

Science experiments lesson 16: Yeast balloon · Set 387 · 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 needed for the yeast balloon? (a) a battery cell (b) a mirror (c) dry yeast (d) a paper clip
2. 2.🍞 Which of these is something yeast needs? (a) salt (b) vinegar (c) sunlight (d) sugar
3. 3.🧺 Which of these is not needed for the yeast balloon? (a) dry yeast (b) a balloon (c) a comb (d) sugar
4. 4.True or false: turmeric powder is needed for the yeast balloon. (a) True (b) False
5. 5.🧺 Do we need a battery cell for the yeast balloon? (a) not needed (b) needed
6. 6.🍞 Which of these is something yeast does not need? (a) time (b) sugar (c) sunlight (d) warm water
7. 7.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) sugar (b) a small bottle (c) a paper clip (d) dry yeast
8. 8.⚖️ 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 same bottles (c) the amount of yeast (d) the amount of water
9. 9.⚖️ 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 water (b) the water temperature (c) the amount of yeast (d) the amount of sugar
10. 10.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) dry yeast (b) warm water (c) a battery cell (d) a small bottle
11. 11.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) sugar (b) warm water (c) a magnet (d) dry yeast
12. 12.🔍 Which is the odd one out? (a) time (b) vinegar (c) a magnet (d) sunlight
13. 13.🛟 The water for the yeast should be ___. (a) very salty (b) ice cold (c) warm, not hot (d) boiling hot
14. 14.🧺 Which of these is needed for the yeast balloon? (a) a comb (b) a magnet (c) warm water (d) a mirror
15. 15.True or false: a small bottle is not needed for the yeast balloon. (a) True (b) False
16. 16.🧺 Do we need turmeric powder for the yeast balloon? (a) needed (b) not needed
17. 17.True or false: warm water is needed for the yeast balloon. (a) False (b) True
18. 18.🧺 Which of these is needed for the yeast balloon? (a) a mirror (b) turmeric powder (c) sugar (d) a battery cell
19. 19.🍞 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
20. 20.🍞 Which of these is something yeast needs? (a) sunlight (b) vinegar (c) warm water (d) salt
21. 21.🔍 Which is the odd one out? (a) time (b) sugar (c) salt (d) warm water
22. 22.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? Which of these is kept the same? (a) the amount of yeast (b) size of the balloon (c) the water temperature
23. 23.🛟 After the yeast experiment, what should you do with the mixture? (a) put it in your mouth (b) pour it down the sink (c) keep it for a month (d) throw it at a wall
24. 24.⚖️ 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 keep it the same (c) we measure it
25. 25.True or false: salt is something yeast needs. (a) True (b) False
26. 26.🧺 Do we need a balloon for the yeast balloon? (a) needed (b) not needed
27. 27.🍞 Where is yeast used in the kitchen? (a) to colour rice (b) to wash dishes (c) to make bread rise (d) to clean floors
28. 28.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) a balloon (b) sugar (c) a comb (d) a small bottle
29. 29.🧺 Which of these is needed for the yeast balloon? (a) turmeric powder (b) a paper clip (c) a small bottle (d) a battery cell
30. 30.🍞 Does yeast need a magnet to make gas? (a) yeast needs it (b) yeast does not need it
31. 31.🍞 Which of these is something yeast does not need? (a) vinegar (b) sugar (c) warm water (d) time
32. 32.🧺 Do we need a magnet for the yeast balloon? (a) not needed (b) needed
33. 33.🧺 Do we need dry yeast for the yeast balloon? (a) needed (b) not needed
34. 34.🔮 Predict: you wait 2 hours instead of 10 minutes. What happens? (a) it shrinks to nothing (b) the balloon is bigger (c) the balloon is smaller (d) it turns to bread
35. 35.🔍 Which is the odd one out? (a) warm water (b) sunlight (c) time (d) sugar
36. 36.🍞 Does yeast need salt to make gas? (a) yeast needs it (b) yeast does not need it
37. 37.🍞 Does yeast need sunlight to make gas? (a) yeast needs it (b) yeast does not need it
38. 38.🧺 Do we need a paper clip for the yeast balloon? (a) not needed (b) needed
39. 39.True or false: vinegar is something yeast does not need. (a) True (b) False
40. 40.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) warm water (b) a mirror (c) a small bottle (d) dry yeast

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