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