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