Baking Soda and Vinegar Experiment Worksheet

Science experiments lesson 11: Baking soda and vinegar balloon · Set 244 · 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.🔍 Which is the odd one out? (a) sugar water (b) plain water (c) vinegar (d) salt water
2. 2.⚖️ Fair test — does more baking soda blow the balloon up bigger? What do we do with “size of the balloon”? (a) we keep it the same (b) we change it (c) we measure it
3. 3.🔮 The fizzing stops after a while. Why? (a) the balloon got cold (b) the bottle got tired (c) the gas froze (d) an ingredient ran out
4. 4.True or false: orange juice is neutral. (a) False (b) True
5. 5.🔮 Predict: you use plain water instead of vinegar. What happens? (a) it turns to honey (b) the balloon bursts (c) very little fizzing (d) a huge eruption
6. 6.True or false: curd is a base. (a) True (b) False
7. 7.📘 Is the fizzing a sign that a new substance is made? (a) no, nothing changes (b) yes, a new gas forms (c) it is only dissolving (d) it is only melting
8. 8.🧺 Three of these are needed for the fizzy balloon. Which one is NOT needed? (a) a seed (b) a funnel or spoon (c) a tray for spills (d) an empty bottle
9. 9.True or false: an empty bottle is needed for the fizzy balloon. (a) False (b) True
10. 10.🛟 What should you do if vinegar splashes in your eye? (a) ignore it (b) rinse with clean water (c) rub it hard (d) add baking soda
11. 11.⚖️ Fair test — does more baking soda blow the balloon up bigger? True or false: the kind of balloon is kept the same. (a) False (b) True
12. 12.🔍 Which is the odd one out? (a) lemon juice (b) curd (c) plain water (d) orange juice
13. 13.🧺 Which of these is not needed for the fizzy balloon? (a) an empty bottle (b) vinegar (c) a tray for spills (d) a seed
14. 14.🧺 Three of these are needed for the fizzy balloon. Which one is NOT needed? (a) baking soda (b) a funnel or spoon (c) a magnet (d) an empty bottle
15. 15.🫧 Is curd an acid, a base or neutral? (a) neutral (b) a base (c) an acid
16. 16.🛟 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
17. 17.True or false: salt water is neutral. (a) True (b) False
18. 18.🧺 Three of these are needed for the fizzy balloon. Which one is NOT needed? (a) an empty bottle (b) vinegar (c) a balloon (d) a battery cell
19. 19.🫧 What do you see when baking soda meets vinegar? (a) it turns to ice (b) nothing at all (c) lots of fizzy bubbles (d) it glows in the dark
20. 20.True or false: sugar is needed for the fizzy balloon. (a) False (b) True
21. 21.🫧 Which of these is an acid? (a) vinegar (b) sugar water (c) plain water (d) soap solution
22. 22.📘 Vinegar is an acid and baking soda is a base. What happens when they meet? (a) they become magnets (b) they react (c) they float apart (d) they freeze
23. 23.🔍 Which is the odd one out? (a) soap solution (b) detergent water (c) curd (d) baking soda water
24. 24.🧺 Do we need a funnel or spoon for the fizzy balloon? (a) not needed (b) needed
25. 25.⚖️ 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
26. 26.⚖️ Fair test — does more baking soda blow the balloon up bigger? What do we do with “the same bottle”? (a) we measure it (b) we change it (c) we keep it the same
27. 27.True or false: baking soda water is a base. (a) True (b) False
28. 28.⚖️ 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
29. 29.⚖️ Fair test — does more baking soda blow the balloon up bigger? Which of these is kept the same? (a) size of the balloon (b) the kind of balloon (c) spoons of baking soda
30. 30.⚖️ 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) False (b) True
31. 31.True or false: vinegar is an acid. (a) False (b) True
32. 32.🔍 Which is the odd one out? (a) tamarind water (b) lemon juice (c) soap solution (d) orange juice
33. 33.⚖️ Fair test — does more baking soda blow the balloon up bigger? True or false: size of the balloon is what we measure. (a) False (b) True
34. 34.🎈 Why does the balloon blow up? (a) vinegar is hot (b) the bottle shrinks (c) outside air gets in (d) gas is made inside
35. 35.🫧 Is orange juice an acid, a base or neutral? (a) neutral (b) an acid (c) a base
36. 36.⚖️ 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 measure it (c) we keep it the same
37. 37.⚖️ Fair test — does more baking soda blow the balloon up bigger? What do we do with “spoons of baking soda”? (a) we measure it (b) we keep it the same (c) we change it
38. 38.⚖️ Fair test — does more baking soda blow the balloon up bigger? True or false: the same bottle is kept the same. (a) False (b) True
39. 39.True or false: curd is neutral. (a) True (b) False
40. 40.🫧 Is salt water an acid, a base or neutral? (a) a base (b) an acid (c) neutral

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