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