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.⚖️ 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
- 2.True or false: lemon juice is a base. (a) False (b) True
- 3.🛟 What should you do if vinegar splashes in your eye? (a) add baking soda (b) ignore it (c) rinse with clean water (d) rub it hard
- 4.🧺 Do we need sugar for the fizzy balloon? (a) needed (b) not needed
- 5.🫧 Which of these is an acid? (a) plain water (b) soap solution (c) sugar water (d) curd
- 6.True or false: sugar is not needed for the fizzy balloon. (a) True (b) False
- 7.True or false: a mirror is needed for the fizzy balloon. (a) True (b) False
- 8.True or false: lemon juice is neutral. (a) False (b) True
- 9.🧺 Do we need baking soda for the fizzy balloon? (a) needed (b) not needed
- 10.🧺 Do we need an empty bottle for the fizzy balloon? (a) not needed (b) needed
- 11.🫧 Which of these is an acid? (a) soap solution (b) detergent water (c) orange juice (d) salt water
- 12.⚖️ 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 keep it the same (c) we change it
- 13.⚖️ Fair test — does more baking soda blow the balloon up bigger? True or false: the same bottle is what we measure. (a) False (b) True
- 14.🫧 Is baking soda water an acid, a base or neutral? (a) a base (b) an acid (c) neutral
- 15.⚖️ 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
- 16.⚖️ 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
- 17.🎈 Why does the balloon blow up? (a) the bottle shrinks (b) gas is made inside (c) outside air gets in (d) vinegar is hot
- 18.True or false: a magnet is needed for the fizzy balloon. (a) True (b) False
- 19.⚖️ 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 same bottle (c) the amount of vinegar (d) spoons of baking soda
- 20.🛟 Which safety rule fits the fizzy balloon experiment? (a) shake it near your face (b) keep it away from eyes (c) seal it in a glass jar (d) put it in your mouth
- 21.🔍 Which is the odd one out? (a) lemon juice (b) detergent water (c) soap solution (d) baking soda water
- 22.🧺 Which of these is not needed for the fizzy balloon? (a) baking soda (b) a tray for spills (c) a balloon (d) sugar
- 23.🔮 The fizzing stops after a while. Why? (a) an ingredient ran out (b) the balloon got cold (c) the gas froze (d) the bottle got tired
- 24.🫧 Is sugar water an acid, a base or neutral? (a) neutral (b) a base (c) an acid
- 25.🔍 Which is the odd one out? (a) lemon juice (b) orange juice (c) curd (d) salt water
- 26.🧺 Which of these is not needed for the fizzy balloon? (a) an empty bottle (b) baking soda (c) a funnel or spoon (d) a comb
- 27.🫧 Is soap solution an acid, a base or neutral? (a) an acid (b) neutral (c) a base
- 28.🫧 What do you see when baking soda meets vinegar? (a) lots of fizzy bubbles (b) nothing at all (c) it glows in the dark (d) it turns to ice
- 29.⚖️ Fair test — does more baking soda blow the balloon up bigger? Which of these is the one thing we change? (a) the kind of balloon (b) spoons of baking soda (c) the same bottle (d) the amount of vinegar
- 30.🧺 Do we need a battery cell for the fizzy balloon? (a) not needed (b) needed
- 31.🫧 Is curd an acid, a base or neutral? (a) neutral (b) an acid (c) a base
- 32.True or false: lemon juice is an acid. (a) False (b) True
- 33.🧺 Which of these is not needed for the fizzy balloon? (a) a magnet (b) vinegar (c) a funnel or spoon (d) a tray for spills
- 34.🔍 Which is the odd one out? (a) curd (b) plain water (c) tamarind water (d) lemon juice
- 35.True or false: curd is an acid. (a) False (b) True
- 36.⚖️ 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
- 37.🧺 Which of these is needed for the fizzy balloon? (a) a seed (b) a tray for spills (c) sugar (d) a comb
- 38.🧺 Three of these are needed for the fizzy balloon. Which one is NOT needed? (a) a balloon (b) a battery cell (c) a tray for spills (d) a funnel or spoon
- 39.🧺 Which of these is not needed for the fizzy balloon? (a) a seed (b) vinegar (c) a funnel or spoon (d) baking soda
- 40.🫧 Which of these is an acid? (a) detergent water (b) salt water (c) plain water (d) vinegar
Answer key
- we change it
- False
- rinse with clean water
- not needed
- curd
- True
- False
- False
- needed
- needed
- orange juice
- we keep it the same
- False
- a base
- the kind of balloon
- True
- gas is made inside
- False
- size of the balloon
- keep it away from eyes
- lemon juice
- sugar
- an ingredient ran out
- neutral
- salt water
- a comb
- a base
- lots of fizzy bubbles
- spoons of baking soda
- not needed
- an acid
- True
- a magnet
- plain water
- True
- True
- a tray for spills
- a battery cell
- a seed
- vinegar
Free science experiments lessons, practice and worksheets at talentjr.in/science-experiments-for-kids