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States of matter.
Matter is everything that
takes up space.
Everything around you is
matter.
The air you breathe.
The water you drink.
The food you eat.
They are all matter but
they are all different kinds of matter .
The air you breathe is a
gas.
It floats all around you .
The water you drink is a liquid.
It flows smoothly down
your throat .
The plate that holds your
food is a solid.
You can hold it in your hands.
Solids, liquids and gases
are the different states of matter.
Somethings can easily
change States.
Water is a liquid.
If you freeze, it it
becomes ice a solid.
If you boil it it becomes
water vapor a gas.
Let 's learn about solids
first.
Solids have shapes.
A book is a solid in the
shape of a rectangle.
A ball is a solid in the
shape of a circle.
Solids are made of little
pieces called particles.
They are packed closely together
.
They can't move across
each other or float away into space.
They can be hard like a
block or soft like a blanket.
They can be heavy like a
boulder or light like a feather.
They can be hot like a
pizza or cold like an icicle.
Here are some objects.
Can you figure out which
of these are solids.
Let 's identify the solid.
A book, toy car and a cup
all are solids.
Let 's learn about liquids now .
Liquids do not have a
shape.
They take the shape of the
container there in .
Water can fill a round bowl.
It can fill a square pan.
It can fill a tall glass.
Liquids are also made of
little pieces called particles .
The particles of a liquid are held together loosely.
They move and slide across each other.
When you pour water, it
flows into a container.
It 's not like a solid.
Solids tumble and bang
into each other.
Liquids are soft and not
hard.
They can be hot like a
mug of hot chocolate.
They can be cold like a
cold glass of lemonade .
Can you identify which of
these objects are liquids.
Let 's identify liquids.
Water, orange juice, milk and soup are all liquids.
Let 's learn about gases now.
Gas particles are not
held together.
They float away and fill up the space there in.
Gases can be light or
heavy.
A gas called helium is
lighter than air.
That 's why a helium balloon stays up.
Gases can be hot or cold when
you're outside on a winter day.
You can feel the cold air.
When you come inside, you
can feel the warm air.
Can you identify
different states of matter in this
picture.
Here ice is the solid .
Water is the liquid and
clouds are made up of gas.
There is another state of
matter called plasma.
Plasma is a gas that has
been heated.
It becomes charged with
energy.
The Sun and the stars are
made of plasma.
Plasma is seen on earth
in lightning.
It can also be made and used by people.
We use it to light up
neon signs, for example.
Now, let's summarize what we've learned.
