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Sec 1
Science
Chemistry
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Sec 1 > Science > Chemistry
7 cards
Cards (11)
volume =
height
x
width
x
length
Diffusion
:
Diffusion
occurs when
particles spread
Diffusion
happens when the
particles
are
free
to
move
(
gases
and for
particles
dissolved
in
solutions)
When
particles
move
faster
, the rate of
diffusion increases
Diffusion
is the
movement
of
particles
from an area of high concentration to an area of high to low concentration until they are
evenly spread out
Air
Pressure:
Air
pressure
is the force of particles hitting a
surface
Air pressure
refers to the volume of
air
in a particular environment, with greater volumes creating higher pressures.
Why does the can suddenly get squashed and crushed it when a vacuum pump has been attached to it?
The
vacuum
sucked
out
all
the
air
particles
from
inside
the
can
and the
air
particles
on the
outside
collides
with the
can
and
crushes
it.
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