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