Baking Soda and Vinegar Experiment Worksheet

Science experiments lesson 11: Baking soda and vinegar balloon · Set 770 · 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 of these is an acid? (a) plain water (b) curd (c) sugar water (d) salt water
2. 2.🛟 Which safety rule fits the fizzy balloon experiment? (a) shake it near your face (b) put it in your mouth (c) seal it in a glass jar (d) keep it away from eyes
3. 3.🔍 Which is the odd one out? (a) detergent water (b) soap solution (c) baking soda water (d) tamarind water
4. 4.🫧 Which of these is a base? (a) plain water (b) lemon juice (c) baking soda water (d) salt water
5. 5.🫧 Which of these is an acid? (a) salt water (b) plain water (c) baking soda water (d) orange juice
6. 6.🧺 Three of these are needed for the fizzy balloon. Which one is NOT needed? (a) a tray for spills (b) baking soda (c) an empty bottle (d) a battery cell
7. 7.🎈 Why does the balloon blow up? (a) the bottle shrinks (b) vinegar is hot (c) outside air gets in (d) gas is made inside
8. 8.🔮 Predict: you use plain water instead of vinegar. What happens? (a) a huge eruption (b) it turns to honey (c) the balloon bursts (d) very little fizzing
9. 9.True or false: vinegar is neutral. (a) False (b) True
10. 10.⚖️ Fair test — does more baking soda blow the balloon up bigger? True or false: size of the balloon is what we measure. (a) True (b) False
11. 11.🫧 Is lemon juice an acid, a base or neutral? (a) neutral (b) an acid (c) a base
12. 12.📘 Is the fizzing a sign that a new substance is made? (a) yes, a new gas forms (b) it is only dissolving (c) no, nothing changes (d) it is only melting
13. 13.🧺 Which of these is needed for the fizzy balloon? (a) a balloon (b) a mirror (c) a comb (d) sugar
14. 14.🔍 Which is the odd one out? (a) curd (b) sugar water (c) salt water (d) plain water
15. 15.🫧 Which of these is a base? (a) curd (b) detergent water (c) plain water (d) salt water
16. 16.📘 Vinegar is an acid and baking soda is a base. What happens when they meet? (a) they float apart (b) they become magnets (c) they freeze (d) they react
17. 17.🧺 Do we need vinegar for the fizzy balloon? (a) needed (b) not needed
18. 18.⚖️ Fair test — does more baking soda blow the balloon up bigger? Which of these is the one thing we change? (a) spoons of baking soda (b) the kind of balloon (c) the same bottle (d) the amount of vinegar
19. 19.⚖️ 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
20. 20.True or false: a magnet is needed for the fizzy balloon. (a) False (b) True
21. 21.🧺 Three of these are needed for the fizzy balloon. Which one is NOT needed? (a) vinegar (b) a mirror (c) a funnel or spoon (d) a balloon
22. 22.⚖️ 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 amount of vinegar
23. 23.🧺 Do we need a magnet for the fizzy balloon? (a) needed (b) not needed
24. 24.True or false: tamarind water is neutral. (a) True (b) False
25. 25.⚖️ Fair test — does more baking soda blow the balloon up bigger? Which of these is kept the same? (a) spoons of baking soda (b) the same bottle (c) size of the balloon
26. 26.🛟 What should you do if vinegar splashes in your eye? (a) ignore it (b) rub it hard (c) add baking soda (d) rinse with clean water
27. 27.🫧 Is orange juice an acid, a base or neutral? (a) neutral (b) an acid (c) a base
28. 28.⚖️ Fair test — does more baking soda blow the balloon up bigger? What do we do with “spoons of baking soda”? (a) we keep it the same (b) we change it (c) we measure it
29. 29.⚖️ Fair test — does more baking soda blow the balloon up bigger? What do we do with “the amount of vinegar”? (a) we change it (b) we keep it the same (c) we measure it
30. 30.⚖️ Fair test — does more baking soda blow the balloon up bigger? Which of these is what we measure? (a) the same bottle (b) the kind of balloon (c) spoons of baking soda (d) size of the balloon
31. 31.⚖️ 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 keep it the same (c) we change it
32. 32.🧺 Which of these is needed for the fizzy balloon? (a) a mirror (b) a battery cell (c) sugar (d) an empty bottle
33. 33.🔮 Predict: you use more vinegar and more baking soda. What happens to the balloon? (a) it grows bigger (b) it turns blue (c) it shrinks (d) there is no change
34. 34.🧺 Do we need a tray for spills for the fizzy balloon? (a) not needed (b) needed
35. 35.True or false: baking soda is needed for the fizzy balloon. (a) True (b) False
36. 36.True or false: tamarind water is an acid. (a) True (b) False
37. 37.🧺 Do we need a funnel or spoon for the fizzy balloon? (a) not needed (b) needed
38. 38.🫧 Is soap solution an acid, a base or neutral? (a) neutral (b) a base (c) an acid
39. 39.🫧 Which of these is an acid? (a) detergent water (b) soap solution (c) plain water (d) lemon juice
40. 40.🧺 Which of these is not needed for the fizzy balloon? (a) a balloon (b) a funnel or spoon (c) a tray for spills (d) a comb

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