Transcript What is Matter?

What is Matter?
Created by: Mrs. Metivier’s 2nd Grade Class
Teacher: Mrs. R. Metivier
Grade: 2nd
Subject: Science
Standard: S2P1 Students will investigate the properties of matter and changes that
occur in objects.
a. Identify the properties of matter and changes that occur in objects.
b. Investigate changes in objects by tearing, dissolving, melting, squeezing, etc.
Directions: Use as a resource when teaching the standard above.
What is matter?
Matter can be a gas,
solid, or a liquid.
Gas is air.
A solid is a hard
shape.
A liquid is water.
Every thing is matter.
Properties of solids
A solid is one kind of
matter.
Like all matter, it
takes up space and
has mass.
A solid is the only
form of matter that
has a shape of its
own.
Measuring solids
You can measure
solids with a ruler to
see how long a solid
is.
You can also
measure solids with a
scale to see how
much it weighs.
Properties of liquid
A liquid takes the
shape of its container.
Even though it takes
its shape of its
container it still has
mass.
Liquid is measured by
milliliters.
If you have one
container and put it in
a other container it is
the same amount.
Measuring Liquids
You can measure the
volume of a liquid.
Volume is the amount
of space a liquid
takes up.
We use cups and
milliliters to measure
liquids.
Properties of Gas
Like all matter, gas
takes up space and
has mass.
A gas takes the
shape of its
container.
A gas is the only
kind of matter that
always fills all the
space inside a
container.
Measuring gas
Gas can be
measured.
A balloon is an
example of measuring
gas.
A balloon with air has
more mass than a
balloon without air.
Cup in the water trick
Even air takes up space!
Try this trick!
Take a paper towel and
put it in the bottom of a
cup. Turn the cup upside
down and push it down in
a bucket of water. Pull it
straight up and look at the
paper towel!...It’s
dry!!!!!!!!!!!! Why? It’s
because the air pushes
the water out of its way.
Explaining Mixtures of matter
Matter can be cut and
mixed .
When solid matter is cut
its shape changes, but its
mass stays the same.
Some mixtures, like
Chex Mix, can be sorted
out.
Some mixtures, like cake
batter, cannot be sorted
back out .
Cutting Matter
When you cut bread it
doesn’t change it’s
form.
It’s mass doesn’t
change .
You can cut a glue
stick in half and its
mass does not
change.
Changing the shape of matter
If you have a rock
and get a hammer
and smash the rock
the rock shape will be
changed but not its
mass.
Play-dough can be
changed to different
shapes, but if the
amount is the same
the mass is the same.
FREEZING WATER
YOU CAN FREEZE
WATER AND CHAGE
IT BACK.
A bottle of water can
be put in the freezer
and it will freeze.
You can take it out of
the freezer and it will
melt.
Heating Water
When you heat water
it will change into a
gas.
At first, you can see
the steam, or water
vapor.
Then the water vapor
spreads into the air
and you cannot see
it.
Evaporation
When the rain comes down and it
dries up again, this is evaporation.
A puddle is liquid water.
The sun’s heat may cause the
water in the puddle to evaporate
or change to water vapor.
I can melt the ice with the hair
dryer until it disappears, or
evaporates.
Cooling water vaporCondensation
When water vapor condenses, or
the heat is taken away,… gas turns
back to water.
We put blue ice water in the cup
and water drops formed on the
outside of the cup, but it was clear.
This water came out of the air.
When the air around the cup cooled
down, the water vapor turned back to
water on the outside of the cup.
It’s not blue so that proves that the
water did not come from inside the
cup.
Reversible Changes
In a reversible change, the matter
can change back to the way it was
before.
Jell-O is a solid when it is cold, but
a liquid when it warms up.
Ice is a solid but when you add heat
to it, it will turn back to a liquid.
Irreversible changes
Cooking can also
cause irreversible
changes. Cooking
makes an egg change
from a liquid to a
solid.
Dancing Raisins Experiment!
Get a clear cup. Fill it half
way up with water. Stir in
two big spoonfuls of
baking soda. Put a few
raisins in the cup. Then
pour in some vinegar and
watch what
happens!......They dance!
The soda and vinegar
makes bubbles that lift
the raisins and then they
POP and sink back down.