Baking Soda and Vinegar Experiment Worksheet

Science experiments lesson 11: Baking soda and vinegar balloon · Set 780 · 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.True or false: plain water is an acid. (a) True (b) False
2. 2.🧺 Which of these is not needed for the fizzy balloon? (a) an empty bottle (b) baking soda (c) a balloon (d) a seed
3. 3.⚖️ Fair test — does more baking soda blow the balloon up bigger? Which of these is kept the same? (a) the amount of vinegar (b) spoons of baking soda (c) size of the balloon
4. 4.🔮 Predict: you use more vinegar and more baking soda. What happens to the balloon? (a) there is no change (b) it shrinks (c) it turns blue (d) it grows bigger
5. 5.🧺 Which of these is needed for the fizzy balloon? (a) sugar (b) a funnel or spoon (c) a magnet (d) a seed
6. 6.🎈 Why does the balloon blow up? (a) the bottle shrinks (b) vinegar is hot (c) outside air gets in (d) gas is made inside
7. 7.⚖️ Fair test — does more baking soda blow the balloon up bigger? What do we do with “the same bottle”? (a) we change it (b) we measure it (c) we keep it the same
8. 8.🫧 Which of these is neutral? (a) curd (b) sugar water (c) detergent water (d) lemon juice
9. 9.⚖️ Fair test — does more baking soda blow the balloon up bigger? True or false: the same bottle is kept the same. (a) True (b) False
10. 10.🧺 Three of these are needed for the fizzy balloon. Which one is NOT needed? (a) sugar (b) a balloon (c) vinegar (d) a funnel or spoon
11. 11.⚖️ Fair test — does more baking soda blow the balloon up bigger? Which of these is what we measure? (a) the amount of vinegar (b) the same bottle (c) size of the balloon (d) spoons of baking soda
12. 12.🫧 Which of these is an acid? (a) soap solution (b) detergent water (c) baking soda water (d) tamarind water
13. 13.True or false: soap solution is a base. (a) False (b) True
14. 14.🛟 What should you do if vinegar splashes in your eye? (a) add baking soda (b) ignore it (c) rub it hard (d) rinse with clean water
15. 15.🔮 The fizzing stops after a while. Why? (a) the bottle got tired (b) the gas froze (c) the balloon got cold (d) an ingredient ran out
16. 16.📘 Vinegar is an acid and baking soda is a base. What happens when they meet? (a) they float apart (b) they freeze (c) they become magnets (d) they react
17. 17.🔍 Which is the odd one out? (a) lemon juice (b) tamarind water (c) curd (d) baking soda water
18. 18.⚖️ Fair test — does more baking soda blow the balloon up bigger? What do we do with “the kind of balloon”? (a) we change it (b) we keep it the same (c) we measure it
19. 19.⚖️ Fair test — does more baking soda blow the balloon up bigger? True or false: spoons of baking soda is kept the same. (a) True (b) False
20. 20.True or false: curd is a base. (a) True (b) False
21. 21.🧺 Do we need a seed for the fizzy balloon? (a) needed (b) not needed
22. 22.⚖️ Fair test — does more baking soda blow the balloon up bigger? Which of these is the one thing we change? (a) size of the balloon (b) the kind of balloon (c) spoons of baking soda (d) the same bottle
23. 23.True or false: detergent water is neutral. (a) False (b) True
24. 24.🫧 Which of these is an acid? (a) detergent water (b) soap solution (c) lemon juice (d) baking soda water
25. 25.🫧 Is salt water an acid, a base or neutral? (a) an acid (b) a base (c) neutral
26. 26.🫧 What do you see when baking soda meets vinegar? (a) it turns to ice (b) nothing at all (c) it glows in the dark (d) lots of fizzy bubbles
27. 27.True or false: soap solution is neutral. (a) True (b) False
28. 28.⚖️ Fair test — does more baking soda blow the balloon up bigger? Which of these is kept the same? (a) spoons of baking soda (b) size of the balloon (c) the same bottle
29. 29.⚖️ Fair test — does more baking soda blow the balloon up bigger? What do we do with “size of the balloon”? (a) we change it (b) we measure it (c) we keep it the same
30. 30.True or false: curd is an acid. (a) False (b) True
31. 31.🫧 Is tamarind water an acid, a base or neutral? (a) an acid (b) neutral (c) a base
32. 32.True or false: vinegar is needed for the fizzy balloon. (a) True (b) False
33. 33.⚖️ Fair test — does more baking soda blow the balloon up bigger? True or false: the amount of vinegar is the one thing we change. (a) False (b) True
34. 34.True or false: a balloon is not needed for the fizzy balloon. (a) True (b) False
35. 35.🧺 Three of these are needed for the fizzy balloon. Which one is NOT needed? (a) a funnel or spoon (b) a balloon (c) a magnet (d) a tray for spills
36. 36.🫧 Is baking soda water an acid, a base or neutral? (a) a base (b) neutral (c) an acid
37. 37.🛟 Which safety rule fits the fizzy balloon experiment? (a) put it in your mouth (b) seal it in a glass jar (c) shake it near your face (d) keep it away from eyes
38. 38.⚖️ Fair test — does more baking soda blow the balloon up bigger? True or false: spoons of baking soda is the one thing we change. (a) True (b) False
39. 39.🧺 Which of these is needed for the fizzy balloon? (a) a seed (b) a mirror (c) sugar (d) vinegar
40. 40.🫧 Which of these is a base? (a) vinegar (b) lemon juice (c) soap solution (d) orange juice

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