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Hi, I'm Jared, welcome to "Fun Science Demos".
The big idea today is water. I know it doesn't sound too exciting but really,
water's pretty amazing.
Everything in the universe is actually made of matter or energy.
I can see matter and touch matter- tables and
dishes and anything like that.
There's also energy. I can't see energy. Energy is
things like sound, light, things like that.
Let's get back to water. Water is an amazing substance that can actually take the
form of three
phases of matter. I can have
solid ice, I can have liquid water and
we'll get to that third phase a little later.
The key to understanding these three phases of water
is heat energy. So let's try this demonstration
and add some heat energy and see what happens. Let's start with our solid-
our solid water-we'll call it ice. How do I apply heat energy to this?
My hands are warm, let's see what happens. I'll put it in my hands and I'll hold it.
Now, I can feel it's cold, you can't see it, well what is happening?
Am I a magician? No, it's science.
The heat from my hands are heating up that solid
ice, that solid water, and it's turning into a liquid:
water. You can see it dropping. The particles of water are actually moving
faster
when they get heated up with that heat energy. Alright, so let's take what's left of
our
solid ice cube, throw it back in. But look at my hands,
they're wet. The water changed from a solid phase
to a liquid phase. Why? The heat energy from my hands.
Now let's take a look at the third phase. So now we're gonna add some liquid water
to this black piece of paper and see what happens when we apply
heat energy. Get some water,
apply it, you can see the paper's wet.
Now it's time for the heat energy.
You can't see it but this hair dryer, it's
putting out some serious heat. Watch what happens to the liquid water.
I'm not a magician, this water seems to be disappearing.
But it's really not disappearing, it's
still here in the air. We call it
a gas. The third phase
is a gas. Solid ice,
liquid water and a gas.
You can't see it because it's actually going into the air.
That heat energy is making those water particles
going faster and faster until they
turn into a gas. Water:
solid, liquid, gas. Heat energy.
Science is so cool. Don't forget to check out our links in our video description for
more
about matter and energy. Thanks for watching.