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.🔮 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 shrinks (d) it grows bigger
- 2.🫧 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
- 3.True or false: vinegar is a base. (a) True (b) False
- 4.True or false: a seed is not needed for the fizzy balloon. (a) False (b) True
- 5.True or false: detergent water is a base. (a) True (b) False
- 6.🫧 Is orange juice an acid, a base or neutral? (a) a base (b) an acid (c) neutral
- 7.🧺 Do we need a comb for the fizzy balloon? (a) needed (b) not needed
- 8.🫧 Is soap solution an acid, a base or neutral? (a) neutral (b) an acid (c) a base
- 9.⚖️ 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
- 10.⚖️ 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 same bottle (c) size of the balloon (d) spoons of baking soda
- 11.🫧 Which gas fills the balloon in the baking soda and vinegar experiment? (a) helium (b) carbon dioxide (c) oxygen (d) hydrogen
- 12.True or false: lemon juice is a base. (a) True (b) False
- 13.⚖️ Fair test — does more baking soda blow the balloon up bigger? What do we do with “the amount of vinegar”? (a) we change it (b) we keep it the same (c) we measure it
- 14.⚖️ Fair test — does more baking soda blow the balloon up bigger? True or false: size of the balloon is kept the same. (a) False (b) True
- 15.True or false: vinegar is needed for the fizzy balloon. (a) False (b) True
- 16.🧺 Three of these are needed for the fizzy balloon. Which one is NOT needed? (a) baking soda (b) a magnet (c) vinegar (d) a funnel or spoon
- 17.True or false: an empty bottle is not needed for the fizzy balloon. (a) True (b) False
- 18.🧺 Which of these is needed for the fizzy balloon? (a) a tray for spills (b) a battery cell (c) a seed (d) sugar
- 19.🧺 Do we need a funnel or spoon for the fizzy balloon? (a) not needed (b) needed
- 20.🛟 Which safety rule fits the fizzy balloon experiment? (a) put it in your mouth (b) seal it in a glass jar (c) shake it near your face (d) keep it away from eyes
- 21.True or false: salt water is neutral. (a) True (b) False
- 22.📘 Vinegar is an acid and baking soda is a base. What happens when they meet? (a) they float apart (b) they react (c) they become magnets (d) they freeze
- 23.🧺 Three of these are needed for the fizzy balloon. Which one is NOT needed? (a) a battery cell (b) an empty bottle (c) a balloon (d) a funnel or spoon
- 24.🔮 Predict: you use plain water instead of vinegar. What happens? (a) very little fizzing (b) a huge eruption (c) it turns to honey (d) the balloon bursts
- 25.🔍 Which is the odd one out? (a) plain water (b) orange juice (c) sugar water (d) salt water
- 26.🧺 Do we need a mirror for the fizzy balloon? (a) needed (b) not needed
- 27.⚖️ 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 keep it the same (c) we measure it
- 28.True or false: an empty bottle is needed for the fizzy balloon. (a) True (b) False
- 29.🧺 Which of these is needed for the fizzy balloon? (a) vinegar (b) a magnet (c) a seed (d) a battery cell
- 30.⚖️ 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
- 31.🧺 Do we need a balloon for the fizzy balloon? (a) not needed (b) needed
- 32.🔍 Which is the odd one out? (a) detergent water (b) soap solution (c) baking soda water (d) lemon juice
- 33.True or false: a balloon is not needed for the fizzy balloon. (a) False (b) True
- 34.🧺 Do we need sugar for the fizzy balloon? (a) needed (b) not needed
- 35.🧺 Which of these is not needed for the fizzy balloon? (a) baking soda (b) a comb (c) vinegar (d) an empty bottle
- 36.🫧 Is sugar 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? True or false: the kind of balloon is kept the same. (a) True (b) False
- 38.🧺 Which of these is needed for the fizzy balloon? (a) a comb (b) sugar (c) a mirror (d) an empty bottle
- 39.🔮 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
- 40.🧺 Three of these are needed for the fizzy balloon. Which one is NOT needed? (a) a funnel or spoon (b) a tray for spills (c) a comb (d) a balloon
Answer key
- it grows bigger
- lots of fizzy bubbles
- False
- True
- True
- an acid
- not needed
- a base
- True
- spoons of baking soda
- carbon dioxide
- False
- we keep it the same
- False
- True
- a magnet
- False
- a tray for spills
- needed
- keep it away from eyes
- True
- they react
- a battery cell
- very little fizzing
- orange juice
- not needed
- we keep it the same
- True
- vinegar
- we keep it the same
- needed
- lemon juice
- False
- not needed
- a comb
- neutral
- True
- an empty bottle
- an ingredient ran out
- a comb
Free science experiments lessons, practice and worksheets at talentjr.in/science-experiments-for-kids