Yeast Balloon Experiment Worksheet

Science experiments lesson 16: Yeast balloon · Set 190 · 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 magnet (b) dry yeast (c) turmeric powder (d) a paper clip
2. 2.🧺 Which of these is needed for the yeast balloon? (a) a magnet (b) a paper clip (c) turmeric powder (d) warm water
3. 3.🍞 Does yeast need time to make gas? (a) yeast needs it (b) yeast does not need it
4. 4.🔍 Which is the odd one out? (a) warm water (b) a magnet (c) salt (d) vinegar
5. 5.🍞 Which of these is something yeast needs? (a) sunlight (b) salt (c) vinegar (d) time
6. 6.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) dry yeast (b) a comb (c) warm water (d) sugar
7. 7.🧺 Do we need a small bottle for the yeast balloon? (a) needed (b) not needed
8. 8.🍞 Does yeast need sugar to make gas? (a) yeast does not need it (b) yeast needs it
9. 9.🔮 Predict (do not try it): yeast is put in boiling water. What happens? (a) it turns to sugar (b) it grows faster (c) the yeast is killed (d) it glows
10. 10.🧺 Do we need dry yeast for the yeast balloon? (a) needed (b) not needed
11. 11.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) sugar (b) dry yeast (c) a small bottle (d) a mirror
12. 12.🛟 The water for the yeast should be ___. (a) boiling hot (b) very salty (c) warm, not hot (d) ice cold
13. 13.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) dry yeast (b) a small bottle (c) a balloon (d) turmeric powder
14. 14.🔍 Which is the odd one out? (a) a magnet (b) sunlight (c) vinegar (d) time
15. 15.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) warm water (b) sugar (c) dry yeast (d) a paper clip
16. 16.🧺 Which of these is needed for the yeast balloon? (a) a small bottle (b) turmeric powder (c) a magnet (d) a comb
17. 17.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? True or false: the same bottles is kept the same. (a) True (b) False
18. 18.⚖️ 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 measure it (b) we change it (c) we keep it the same
19. 19.🍞 Does yeast need vinegar to make gas? (a) yeast does not need it (b) yeast needs it
20. 20.True or false: a magnet is something yeast needs. (a) False (b) True
21. 21.True or false: a magnet is needed for the yeast balloon. (a) False (b) True
22. 22.🍞 Does yeast need sunlight to make gas? (a) yeast does not need it (b) yeast needs it
23. 23.🧺 Do we need turmeric powder for the yeast balloon? (a) not needed (b) needed
24. 24.True or false: sugar is not needed for the yeast balloon. (a) True (b) False
25. 25.⚖️ 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 sugar
26. 26.📘 What is yeast? (a) a kind of sugar (b) a kind of salt (c) a tiny living fungus (d) a kind of stone
27. 27.⚖️ 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 same bottles (b) the water temperature (c) the amount of sugar (d) the amount of water
28. 28.🧺 Do we need sugar for the yeast balloon? (a) needed (b) not needed
29. 29.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) sugar (b) a balloon (c) a battery cell (d) warm water
30. 30.🧺 Do we need warm water for the yeast balloon? (a) not needed (b) needed
31. 31.🔮 Predict: you leave out the sugar. What happens to the balloon? (a) it turns yellow (b) it grows much faster (c) it bursts at once (d) it grows very little
32. 32.🔮 Predict: you wait 2 hours instead of 10 minutes. What happens? (a) it turns to bread (b) the balloon is smaller (c) it shrinks to nothing (d) the balloon is bigger
33. 33.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? True or false: the water temperature is what we measure. (a) True (b) False
34. 34.🛟 After the yeast experiment, what should you do with the mixture? (a) throw it at a wall (b) keep it for a month (c) pour it down the sink (d) put it in your mouth
35. 35.🔍 Which is the odd one out? (a) vinegar (b) a magnet (c) salt (d) sugar
36. 36.🍞 Does yeast need a magnet to make gas? (a) yeast does not need it (b) yeast needs it
37. 37.⚖️ 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) the amount of yeast (c) the water temperature (d) size of the balloon
38. 38.🎈 What blows up the balloon in the yeast experiment? (a) smoke (b) carbon dioxide gas (c) steam (d) air from outside
39. 39.🧺 Which of these is not needed for the yeast balloon? (a) a balloon (b) a small bottle (c) sugar (d) turmeric powder
40. 40.True or false: dry yeast is not needed for the yeast balloon. (a) True (b) False

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