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Solids, liquids and gases
Science, Grade 6
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Study Guide Solids, liquids and gases Science, Grade 6
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SOLIDS,
LIQUIDS
AND
GASES
Three
States
of
Matter
Matter
exists
in
three
different
states
or
phases:
solid,
liquids
and
gases
or
vapors.
•
A
solid
has
a
definite
shape
and
volume,
•
A
liquid
has
a
definite
volume
but
no
definite
shape
and
•
A
gas
has
neither
a
definite
volume
nor
shape.
These
three
phases
can
be
changed
from
one
to
another.
If
these
changes
occur
they
would
be
physical
changes.
Water
can
freeze
and
ice
can
melt.
Water
vapor
can
condense
to
rain
which
can
evaporate
or
dry
up.
Sometimes,
solids
go
directly
to
a
gas
stage
such
as
in
a
carbon
dioxide
fire
extinguisher
where
solid
CO2
becomes
CO2
vapor.
This
is
called
sublimation.
Lesson
Checkpoint:
Describe
the
physical
changes
possible
in
the
three
states
of
matter.
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Behaviors
of
Gases
Gases
or
vapors
are
influenced
by
three
factors:
temperature,
volume
and
pressure.
The
behavior
of
a
gas
is
directly
related
to
the
effect
of
these
factors
on
the
gas.
Temperature
affects
the
speed
at
which
the
gas
particles
move.
An
increase
in
temperature
causes
more
movement
in
the
particles
and
a
decrease
makes
them
slow
down.
In
a
hot
air
balloon
the
flame
heats
the
air,
and
as
the
temperature
goes
up
so
does
the
volume
of
the
gas.
As
its
volume
increases,
some
of
the
air
leaves
through
the
bottom
of
the
balloon.
This
lowers
the
density
of
the
air
in
the
balloon
and
allows
the
balloon
to
rise.
In
an
opposite
manner,
if
you
wanted
to
convert
a
vapor
to
a
liquid
you
would
lower
its
temperature,
decrease
its
volume
and
bring
the
particles
closer
together
as
they
are
in
a
liquid.
This
is
Charles’s
Law.
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purchaser
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print
copies
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educational
purposes
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Visit
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at
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Boyle’s
Law
On
the
other
hand,
according
to
Boyle’s
Law,
the
pressure
of
a
gas
is
inversely
related
to
its
volume.
What
this
means
is
that
as
the
pressure
on
a
gas
goes
up
and
thus
its
gas
particles
are
brought
closer
together,
its
volume
goes
down.
In
an
opposite
manner,
as
the
pressure
on
a
gas
decreases,
its
particles
spread
out
and
the
volume
increases.
These
laws
can
be
represented
graphically.
Check
the
graphs
shown
below.
Lesson
Checkpoint:
What
are
the
three
factors
that
affect
the
behavior
of
gases?
© Copyright NewPath Learning. All Rights Reserved.
Permission
is
granted
for
the
purchaser
to
print
copies
for
non-commercial
educational
purposes
only.
Visit
us
at
www.NewPathLearning.com.
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