“Soda can collapse”

Physical experiment from class 8ºB2016-2017

Objective

Let’s study the effects of atmospheric pressure on

the surface of a empty soda can!

Material

1• 1 Circular

glass dish2 •1 hot plate

3 •1 beaker tongue

4 •1 Empty soda can

5 •Water

6 •Ice

7 •Squeeze bottle lab

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Put ice in a circular glass dish with water; Put a little water in an empty soda can; Place the can on a hot plate; When steam starts off, grab the can with

tongs; Quickly turn opening into the cold water; Observe what happens.

Procedure

Discuss and debate

Debate ideas with your colleagues, share your thoughts and analyze what happened, looking up information.

A change in the physical state of the water occurs inside of the can: it goes from liquid to vapor. When the can is placed in contact with the cold water that cools the steam, the watervapor rapidly passes to the liquid state. As the air pressure outside the can is higher than the pressure inside, the can surface collapses.

Conclusions

The atmospheric air contains water vapor, oxygen, nitrogen, carbon dioxide and other gases, and their pressure is greater than the water vapor pressure inside the can.The steam condenses rapidly, comes to occupy a smaller space, so that the effect of the collapse is more intense.

Conclusions

Search for:Phase changes

of matter...

Atmospheric pressure...

See the video of the experiment in our classroom !

Now, do the experiment in your school and send us

photos/videos.

center of high and low pressures

formation …

If you want to learn

more, search for…

…variations in atmospheric

pressure over the Earth's

atmosphere…

And most of all, have fun with science!