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