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Comparing matter
Science, Grade 2
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Study Guide Comparing matter Science, Grade 2
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MATTER
ALL
AROUND
What
is
Matter?
Not
WHAT
is
the
matter
–
what
IS
matter?
Matter
is
all
around
you.
Matter
is
anything
that
takes
up
space.
Mass
is
the
amount
of
matter
in
an
object.
It
is
how
much
stuff
an
object
is
made
of.
Let’s
check
what
we
have
learned
so
far:
What
is
matter?
Three
States
of
Matter
Matter
can
be
solid,
liquid,
or
gas.
These
are
the
three
states
of
matter.
Solid
A
solid
takes
up
space.
A
solid
has
its
own
shape.
A
solid’s
shape
will
not
change.
Liquid
A
liquid
also
takes
up
space.
A
liquid
can
change
its
shape.
A
liquid
takes
the
shape
of
whatever
it
is
poured
into…like
a
glass.
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Gas
A
gas
takes
up
space.
You
can’t
see
most
gases.
A
gas
can
change
size
and
shape.
A
gas
takes
the
size
and
shape
of
what
is
holding
it.
WATER
-
in
ALL
three
states
of
matter:
solid
=
ice
cube
liquid
=
glass
of
water
gas
=
water
vapor
Let’s
check
what
we
have
learned
so
far:
Describe
some
features
of
a
liquid.
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Matter
Can
Change
Matter
can
be
changed.
Example:
When
you
cut
paper
in
half
using
scissors.
Liquid
can
change
into
a
solid:
Water,
a
liquid,
which
is
placed
in
a
freezer
will
freeze
into
ice,
a
solid.
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Solids
can
change
into
a
liquid:
An
ice
cube,
a
solid,
can
melt
into
a
puddle
of
water,
a
liquid.
Heat
melts
the
ice
causing
it
to
change
states.
A
liquid
can
change
into
a
gas:
Heat
can
cause
water
to
change
into
a
gas
too
–
if
you
boil
water,
the
water,
which
is
a
liquid,
will
change
into
water
vapor,
which
is
a
gas.
The
sun
can
cause
water
in
a
puddle
to
evaporate.
Evaporate
means
to
change
from
a
liquid
to
a
gas
(water
vapor).
You
can
even
mix
solids
and
liquids
together:
water
with
ice
cubes
in
it.
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Dissolving
Some
solids
will
dissolve
in
liquid.
Dissolve
means
to
break
into
tiny
pieces
so
small
so
that
the
pieces
can
not
be
seen
any
longer.
Salt
dissolves
in
water.
Another
Kind
of
Change
One
last
example
of
matter
changing
is
when
wood
burns
it
changes
from
wood
into
ashes,
which
is
a
different
kind
of
matter
than
the
wood.
Let’s
check
what
we
have
learned
so
far:
Give
one
example
of
how
a
solid
can
change
into
a
liquid.
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purchaser
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