Make a Baking Soda Rocket .edu

Make a Baking Soda Rocket

What You Need

?

2-liter bottle (empty)

?

3 cups vinegar (or fill

the bottle about

half full)

?

What To Do

?

Use the duct tape to attach

the pencils to the bottle so

that the bottle can sit on

the ground with the

opening pointing down.

2 to 3 tablespoons

baking soda

?

Fill the bottle about half-full

of vinegar.

?

Duct tape

?

?

3 pencils

Place baking soda on a

small square of paper towel

and roll it up.

?

Cork that fits in the

bottle opening¡ªnot

too tight

?

Go to an outside open

space and put on safety

glasses.

?

Paper towel

?

Push rolled paper towel into

the bottle and insert cork.

?

Safety glasses

?

Quickly place bottle on its

pencil legs on a flat surface.

?

Stand back and watch your

rocket take off!

What¡¯s Happening

Mixing vinegar and baking

soda causes a chemical

reaction. The reaction gives

off gas (carbon dioxide). As

the gas expands inside the

bottle, it runs out of space.

Pressure begins to build.

Eventually the pressure

pushes out the cork, and the

rocket soars into the air.

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