Baking Soda and Vinegar Experiment Worksheet

Science experiments lesson 11: Baking soda and vinegar balloon · Set 140 · 40 questions

What you do (Acid + base → gas): 1. Pour vinegar into the plastic bottle, standing on a tray. 2. Spoon two teaspoons of baking soda into the balloon. 3. Stretch the balloon over the bottle’s mouth, letting it hang to the side. 4. Lift the balloon so the soda drops in, and keep faces back.

1. 1.🎈 Why does the balloon blow up? (a) vinegar is hot (b) outside air gets in (c) gas is made inside (d) the bottle shrinks
2. 2.🫧 Is lemon juice an acid, a base or neutral? (a) a base (b) an acid (c) neutral
3. 3.⚖️ Fair test — does more baking soda blow the balloon up bigger? True or false: the same bottle is the one thing we change. (a) False (b) True
4. 4.True or false: a comb is needed for the fizzy balloon. (a) True (b) False
5. 5.🧺 Three of these are needed for the fizzy balloon. Which one is NOT needed? (a) baking soda (b) a balloon (c) sugar (d) an empty bottle
6. 6.🧺 Which of these is not needed for the fizzy balloon? (a) a tray for spills (b) baking soda (c) a seed (d) vinegar
7. 7.📘 Vinegar is an acid and baking soda is a base. What happens when they meet? (a) they float apart (b) they freeze (c) they react (d) they become magnets
8. 8.🛟 Which safety rule fits the fizzy balloon experiment? (a) put it in your mouth (b) shake it near your face (c) seal it in a glass jar (d) keep it away from eyes
9. 9.🧺 Which of these is needed for the fizzy balloon? (a) a tray for spills (b) a magnet (c) a mirror (d) a comb
10. 10.⚖️ Fair test — does more baking soda blow the balloon up bigger? What do we do with “the kind of balloon”? (a) we measure it (b) we change it (c) we keep it the same
11. 11.🧺 Do we need a balloon for the fizzy balloon? (a) needed (b) not needed
12. 12.🔮 Predict: you use more vinegar and more baking soda. What happens to the balloon? (a) it grows bigger (b) it turns blue (c) there is no change (d) it shrinks
13. 13.⚖️ Fair test — does more baking soda blow the balloon up bigger? What do we do with “spoons of baking soda”? (a) we change it (b) we measure it (c) we keep it the same
14. 14.🧺 Which of these is not needed for the fizzy balloon? (a) a balloon (b) a funnel or spoon (c) a magnet (d) vinegar
15. 15.🫧 Is detergent water an acid, a base or neutral? (a) an acid (b) neutral (c) a base
16. 16.⚖️ Fair test — does more baking soda blow the balloon up bigger? True or false: the amount of vinegar is what we measure. (a) True (b) False
17. 17.True or false: sugar is needed for the fizzy balloon. (a) True (b) False
18. 18.True or false: vinegar is not needed for the fizzy balloon. (a) True (b) False
19. 19.🔮 Predict: you use plain water instead of vinegar. What happens? (a) the balloon bursts (b) very little fizzing (c) a huge eruption (d) it turns to honey
20. 20.🧺 Do we need a funnel or spoon for the fizzy balloon? (a) not needed (b) needed
21. 21.⚖️ Fair test — does more baking soda blow the balloon up bigger? True or false: the amount of vinegar is kept the same. (a) False (b) True
22. 22.🫧 Which of these is neutral? (a) salt water (b) vinegar (c) lemon juice (d) tamarind water
23. 23.🔍 Which is the odd one out? (a) plain water (b) salt water (c) baking soda water (d) sugar water
24. 24.🧺 Three of these are needed for the fizzy balloon. Which one is NOT needed? (a) baking soda (b) a funnel or spoon (c) a tray for spills (d) a seed
25. 25.🫧 Which gas fills the balloon in the baking soda and vinegar experiment? (a) hydrogen (b) helium (c) oxygen (d) carbon dioxide
26. 26.⚖️ Fair test — does more baking soda blow the balloon up bigger? Which of these is kept the same? (a) the amount of vinegar (b) size of the balloon (c) spoons of baking soda
27. 27.⚖️ Fair test — does more baking soda blow the balloon up bigger? True or false: the kind of balloon is kept the same. (a) True (b) False
28. 28.🧺 Which of these is not needed for the fizzy balloon? (a) an empty bottle (b) a tray for spills (c) vinegar (d) a mirror
29. 29.True or false: lemon juice is an acid. (a) False (b) True
30. 30.🫧 Which of these is a base? (a) tamarind water (b) detergent water (c) lemon juice (d) salt water
31. 31.True or false: baking soda is needed for the fizzy balloon. (a) False (b) True
32. 32.⚖️ Fair test — does more baking soda blow the balloon up bigger? True or false: the kind of balloon is what we measure. (a) False (b) True
33. 33.🧺 Which of these is needed for the fizzy balloon? (a) a magnet (b) sugar (c) a mirror (d) baking soda
34. 34.🔮 The fizzing stops after a while. Why? (a) the bottle got tired (b) the gas froze (c) an ingredient ran out (d) the balloon got cold
35. 35.⚖️ Fair test — does more baking soda blow the balloon up bigger? What do we do with “the amount of vinegar”? (a) we measure it (b) we change it (c) we keep it the same
36. 36.⚖️ Fair test — does more baking soda blow the balloon up bigger? Which of these is the one thing we change? (a) the kind of balloon (b) size of the balloon (c) the same bottle (d) spoons of baking soda
37. 37.🫧 Which of these is an acid? (a) soap solution (b) detergent water (c) lemon juice (d) salt water
38. 38.📘 Is the fizzing a sign that a new substance is made? (a) yes, a new gas forms (b) no, nothing changes (c) it is only melting (d) it is only dissolving
39. 39.🔍 Which is the odd one out? (a) salt water (b) sugar water (c) plain water (d) lemon juice
40. 40.🫧 Which of these is neutral? (a) lemon juice (b) detergent water (c) baking soda water (d) plain water

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