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States of Matter - Gases
Physical Science - Middle School
❮
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States
of
Matter:
Gases
© Copyright NewPath Learning. All Rights Reserved. 94-4831
Visit
www.newpathlearning.com
for
Online
Learning
Resources.
Gases
Gas
particles
move
in
all
directions,
and
are
only
limited
by
the
container
they
are
in.
Unlike
solids
and
liquids,
gas
particles
have
a
lot
of
empty
space
between
them.
Gases
can
change
both
shape
and
volume.
Scientists
discovered
that
the
temperature,
volume
and
pressure
of
a
gas
are
all
related.
Changing
one
of
these
factors,
affects
the
other
factors.
Boyle’s
Law
Robert
Boyle
was
a
scientist
that
studied
gases
and
the
relationship
between
pressure
and
volume.
Boyle’s
law
states
that,
for
a
gas
that
is
at
a
constant
temperature,
the
volume
is
inversely
related
to
the
pressure.
Charles’s
Law
In
the
late
1700s
a
scientist
and
inventor
named
Jacques
Charles
helped
create
the
first
hydrogen-
filled
balloons.
He
discovered
that
the
volume
of
a
gas,
such
as
hydrogen,
will
increase
as
the
temperature
of
the
gas
is
increased.
Charles’s
Law
states
that,
for
a
fixed
amount
of
gas
at
a
constant
pressure,
the
volume
will
change
in
direct
proportion
to
a
change
in
temperature.
For
instance,
in
a
hot
air
balloon,
as
the
gas
inside
the
balloon
is
heated
and
the
temperature
increases,
the
volume
of
the
gas
expands,
and
the
balloon
gets
larger.
volume
(mL)
constant
temperature
pressure
(kPa)
0
volume
=
10,000
mL
pressure
=
14
kPa
volume
=
5,000
mL
pressure
=
28
kPa
volume
(mL)
constant
temperature
pressure
(kPa)
0
volume
=
10,000
mL
pressure
=
14
kPa
volume
=
5,000
mL
pressure
=
28
kPa
higher
pressure
lower
pressure
increase
in
volume
An
example
of
Boyle’s
Law
in
action
is
the
increasing
volume
of
bubbles
as
they
rise
from
an
area
of
high
pressure
to
an
area
of
low
pressure.
A
scuba
diver
at
the
bottom
of
the
ocean
releases
air
bubbles.
As
the
bubbles
rise,
the
pressure
inside
the
bubbles
decreases.
This
decrease
in
pressure
results
in
an
increase
in
volume
within
the
air
bubbles,
and
the
bubbles
get
larger.
temperature
(K)
0
constant
pressure
volume
(mL)
volume
is
directly
related
to
temperature
Jacques
Charles
Robert
Boyle
volume
is
inversely
related
to
pressure
______________________________________________________________________
______________________________________________________________________
______________________________________________________________________
(mL)
constant
temperature
temperature
(K)
0
constant
pressure
volume
(mL)
_________________________
Law
_________________________
Law
Pause
and
Review
Which
gas
law
does
the
graph
represent
-
Boyle’s
Law
or
Charles’s
Law?
Briefly
explain
the
law
and
the
relationships
between
gas
pressure,
volume
and
temperature.
© Copyright NewPath Learning. All Rights Reserved. 94-4831
Visit
www.newpathlearning.com
for
Online
Learning
Resources.
States
of
Matter:
Gases
______________________________________________________________________
______________________________________________________________________
______________________________________________________________________
volume
(mL)
constant
temperature
pressure
(kPa)
0
temperature
(K)
0
constant
pressure
volume
(mL)
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