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Balloon Chemical Reaction Experiment

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Balloon Chemical Reaction Experiment

Work with an adult. Wear safety glasses, keep the mixture away from your eyes and mouth, and never taste the materials. Use a small plastic bottle and do not seal it with a cap. Wash your hands when you finish.

Gather and predict

You will need: a small plastic bottle, a balloon, about 100 mL of vinegar, 1–2 teaspoons of baking soda, a funnel and safety glasses. An adult can help measure and pour.

1.Before mixing anything, what do you predict will happen when the baking soda and vinegar meet? Give one reason for your prediction.

Run the test

1. Put on safety glasses. 2. With an adult, pour vinegar into the bottle. 3. Use the funnel to put baking soda into the balloon. 4. Carefully stretch the balloon opening over the bottle neck without tipping the baking soda in yet. 5. Lift the balloon so the powder falls into the vinegar. Watch closely. When finished, an adult should dispose of the mixture safely.

2.Number these actions from 1 to 4: ___ lift the balloon to drop in the baking soda; ___ pour vinegar into the bottle; ___ put baking soda into the balloon; ___ fit the balloon over the bottle neck.

3.A fair test changes one thing at a time. If you want to find out whether using more baking soda makes a bigger balloon, name one thing you should keep the same in each trial.

4.After mixing, write two observations you could make using your senses safely. Do not touch or taste the mixture.

Draw the bottle and balloon after the reaction. Add arrows to show any changes you noticed.

5.Choose the best explanation for why the balloon inflated.

A gas formed in the reaction and moved into the balloon.
The balloon stretched by itself.
The vinegar turned into air from outside the bottle.

6.The reaction between baking soda and vinegar produces carbon dioxide gas. True or false: the bubbles are evidence that a gas is being made.

TrueFalse

7.When baking soda and vinegar react, they produce carbon dioxide, a type of .

8.Choose the best conclusion: mixing baking soda and vinegar is…

a chemical reaction that makes new substances, including carbon dioxide gas.
only a change in the balloon’s shape.
a change caused by air being blown into the bottle.

9.Suppose your balloon barely inflated. Suggest one change you could try in a new test, and explain how you would make the comparison fair.

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Year 5

Balloon Chemical Reaction Experiment

Balloon Chemical Reaction Experiment

Gather and predict

Run the test

2 printable pages

About This Worksheet

Free in Kuraplan

Print-Ready

AI-Generated

For Teachers & Parents

Need a custom version of this worksheet?

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