Erasmus head in the clouds - colapso da lata PowerPoint experimental proposal

1. “Soda can collapse”
Physical experiment from class 8ºB
2016-2017

2. Objective
Let’s study the effects of
atmospheric pressure on
the surface of a empty
soda can!

3. Material
1 • 1 Circular glass dish
2 • 1 hot plate
3 • 1 beaker tongue
4 • 1 Empty soda can
5 • Water
6 • Ice
7 • Squeeze bottle lab

5. 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

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

7.  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

8.  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

9. Search for:
Phase changes of
matter...

10. Atmospheric
pressure...

11. See the video of the experiment in
our classroom !
Now, do the experiment in
your school and send us
photos/videos.

12. center of high
and low
pressures
formation …
If you want to
learn more,
search for…

14. …variations in
atmospheric
pressure over the
Earth's
atmosphere…

15. And most of all, have fun
with science!
  