Yeast Balloon Experiment Worksheet

Science experiments lesson 16: Yeast balloon · Set 967 · 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.True or false: a balloon is not needed for the yeast balloon. (a) False (b) True
2. 2.⚖️ 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 amount of water
3. 3.🍞 Does yeast need time to make gas? (a) yeast does not need it (b) yeast needs it
4. 4.🔍 Which is the odd one out? (a) a magnet (b) time (c) vinegar (d) salt
5. 5.🍞 Does yeast need warm water to make gas? (a) yeast needs it (b) yeast does not need it
6. 6.🧺 Do we need turmeric powder for the yeast balloon? (a) needed (b) not needed
7. 7.🍞 Which of these is something yeast does not need? (a) sugar (b) a magnet (c) warm water (d) time
8. 8.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) warm water (b) dry yeast (c) a small bottle (d) turmeric powder
9. 9.🧺 Do we need a comb for the yeast balloon? (a) needed (b) not needed
10. 10.🔮 Predict: you wait 2 hours instead of 10 minutes. What happens? (a) it turns to bread (b) the balloon is bigger (c) the balloon is smaller (d) it shrinks to nothing
11. 11.True or false: sugar is not needed for the yeast balloon. (a) False (b) True
12. 12.🛟 The water for the yeast should be ___. (a) boiling hot (b) ice cold (c) warm, not hot (d) very salty
13. 13.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) a balloon (b) a magnet (c) a small bottle (d) sugar
14. 14.🧺 Which of these is not needed for the yeast balloon? (a) a small bottle (b) sugar (c) warm water (d) a paper clip
15. 15.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) a small bottle (b) sugar (c) a paper clip (d) a balloon
16. 16.🧺 Do we need a magnet for the yeast balloon? (a) needed (b) not needed
17. 17.⚖️ 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
18. 18.🍞 Which of these is something yeast needs? (a) time (b) a magnet (c) salt (d) vinegar
19. 19.🍞 Which of these is something yeast does not need? (a) time (b) sugar (c) warm water (d) sunlight
20. 20.🧺 Which of these is needed for the yeast balloon? (a) turmeric powder (b) a mirror (c) warm water (d) a magnet
21. 21.🍞 Which of these is something yeast needs? (a) warm water (b) a magnet (c) sunlight (d) vinegar
22. 22.⚖️ 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) False (b) True
23. 23.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) a mirror (b) a small bottle (c) warm water (d) a balloon
24. 24.🧺 Do we need sugar for the yeast balloon? (a) not needed (b) needed
25. 25.True or false: a small bottle is not needed for the yeast balloon. (a) False (b) True
26. 26.True or false: a comb is needed for the yeast balloon. (a) False (b) True
27. 27.🧺 Which of these is needed for the yeast balloon? (a) a battery cell (b) sugar (c) a mirror (d) a paper clip
28. 28.⚖️ 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
29. 29.True or false: turmeric powder is needed for the yeast balloon. (a) True (b) False
30. 30.🎈 What blows up the balloon in the yeast experiment? (a) smoke (b) carbon dioxide gas (c) steam (d) air from outside
31. 31.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) a comb (b) sugar (c) a balloon (d) dry yeast
32. 32.🧺 Which of these is needed for the yeast balloon? (a) a paper clip (b) turmeric powder (c) a balloon (d) a mirror
33. 33.⚖️ 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 sugar (b) the amount of yeast (c) size of the balloon (d) the same bottles
34. 34.🧺 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 battery cell
35. 35.⚖️ 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
36. 36.⚖️ 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 same bottles (d) the amount of yeast
37. 37.🔮 Predict: you leave out the sugar. What happens to the balloon? (a) it grows very little (b) it grows much faster (c) it turns yellow (d) it bursts at once
38. 38.🍞 Which of these is something yeast does not need? (a) warm water (b) time (c) salt (d) sugar
39. 39.🍞 Where is yeast used in the kitchen? (a) to colour rice (b) to make bread rise (c) to clean floors (d) to wash dishes
40. 40.🧺 Which of these is not needed for the yeast balloon? (a) a balloon (b) a magnet (c) dry yeast (d) sugar

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