full balloon has more molecules of air on the inside, than the same
volume of air on the outside. In other words, the concentration
of air is higher inside of the balloon than outside. Another way to
express the concentration of air is air pressure.
So the air pressure is higher inside the balloon than outside.
If you could look at the balloon
through a microscope, you would see that it has tiny holes.
Over time, some of the air inside the balloon can slowly escape
through these tiny holes. The air will continue escaping through
the skin of the balloon until the air pressure is the same on the
inside and outside.
We will learn more about concentration
later in this lesson.
up balloons in class today. See what they look like
when you come back to class tomorrow!
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