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.
NameDateTime takenScore ___ / 40
- 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.🧺 Which of these is needed for the fizzy balloon? (a) a seed (b) a mirror (c) sugar (d) baking soda
- 3.🔍 Which is the odd one out? (a) orange juice (b) plain water (c) vinegar (d) curd
- 4.⚖️ Fair test — does more baking soda blow the balloon up bigger? What do we do with “the same bottle”? (a) we keep it the same (b) we measure it (c) we change it
- 5.🫧 Which of these is neutral? (a) orange juice (b) lemon juice (c) vinegar (d) sugar water
- 6.🧺 Do we need sugar for the fizzy balloon? (a) needed (b) not needed
- 7.🧺 Do we need a battery cell for the fizzy balloon? (a) needed (b) not needed
- 8.⚖️ 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 amount of vinegar (c) spoons of baking soda (d) the same bottle
- 9.🧺 Do we need a mirror for the fizzy balloon? (a) needed (b) not needed
- 10.🛟 What should you do if vinegar splashes in your eye? (a) add baking soda (b) rub it hard (c) rinse with clean water (d) ignore it
- 11.🫧 Which of these is a base? (a) soap solution (b) salt water (c) lemon juice (d) orange juice
- 12.🫧 Is detergent water an acid, a base or neutral? (a) a base (b) an acid (c) neutral
- 13.🧺 Do we need an empty bottle for the fizzy balloon? (a) not needed (b) needed
- 14.🔮 Predict: you use more vinegar and more baking soda. What happens to the balloon? (a) it grows bigger (b) there is no change (c) it turns blue (d) it shrinks
- 15.🫧 What do you see when baking soda meets vinegar? (a) it glows in the dark (b) it turns to ice (c) nothing at all (d) lots of fizzy bubbles
- 16.⚖️ 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 change it (c) we keep it the same
- 17.True or false: an empty bottle is not needed for the fizzy balloon. (a) False (b) True
- 18.⚖️ 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) size of the balloon (d) spoons of baking soda
- 19.🫧 Which of these is an acid? (a) curd (b) soap solution (c) plain water (d) salt water
- 20.🧺 Do we need a tray for spills for the fizzy balloon? (a) needed (b) not needed
- 21.🫧 Which of these is neutral? (a) baking soda water (b) tamarind water (c) salt water (d) soap solution
- 22.True or false: detergent water is a base. (a) False (b) True
- 23.🫧 Is sugar water an acid, a base or neutral? (a) an acid (b) neutral (c) a base
- 24.⚖️ Fair test — does more baking soda blow the balloon up bigger? What do we do with “spoons of baking soda”? (a) we keep it the same (b) we change it (c) we measure it
- 25.True or false: a seed is not needed for the fizzy balloon. (a) False (b) True
- 26.🧺 Three of these are needed for the fizzy balloon. Which one is NOT needed? (a) vinegar (b) baking soda (c) an empty bottle (d) sugar
- 27.⚖️ 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 measure it (c) we change it
- 28.True or false: a seed is needed for the fizzy balloon. (a) False (b) True
- 29.🫧 Is vinegar an acid, a base or neutral? (a) a base (b) neutral (c) an acid
- 30.🫧 Is baking soda water an acid, a base or neutral? (a) a base (b) neutral (c) an acid
- 31.⚖️ Fair test — does more baking soda blow the balloon up bigger? True or false: size of the balloon is what we measure. (a) True (b) False
- 32.🔍 Which is the odd one out? (a) plain water (b) salt water (c) tamarind water (d) sugar water
- 33.🧺 Which of these is not needed for the fizzy balloon? (a) a funnel or spoon (b) a battery cell (c) an empty bottle (d) a tray for spills
- 34.🧺 Which of these is needed for the fizzy balloon? (a) vinegar (b) sugar (c) a comb (d) a mirror
- 35.True or false: lemon juice is a base. (a) False (b) True
- 36.📘 Vinegar is an acid and baking soda is a base. What happens when they meet? (a) they freeze (b) they float apart (c) they become magnets (d) they react
- 37.🧺 Which of these is needed for the fizzy balloon? (a) a mirror (b) a battery cell (c) a magnet (d) a balloon
- 38.🫧 Which of these is an acid? (a) detergent water (b) sugar water (c) tamarind water (d) soap solution
- 39.🫧 Is lemon juice an acid, a base or neutral? (a) neutral (b) an acid (c) a base
- 40.🧺 Three of these are needed for the fizzy balloon. Which one is NOT needed? (a) an empty bottle (b) vinegar (c) a mirror (d) baking soda
Answer key
- keep it away from eyes
- baking soda
- plain water
- we keep it the same
- sugar water
- not needed
- not needed
- size of the balloon
- not needed
- rinse with clean water
- soap solution
- a base
- needed
- it grows bigger
- lots of fizzy bubbles
- we keep it the same
- False
- spoons of baking soda
- curd
- needed
- salt water
- True
- neutral
- we change it
- True
- sugar
- we measure it
- False
- an acid
- a base
- True
- tamarind water
- a battery cell
- vinegar
- False
- they react
- a balloon
- tamarind water
- an acid
- a mirror
Free science experiments lessons, practice and worksheets at talentjr.in/science-experiments-for-kids