Fun Video: Nature of Matter Video Lecture | Physical Chemistry for NEET

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You ever hear someone say you look like
a million bucks?
Well, you do but you also look like a
million particles.
Let me explain you and I are both made
of matter.
I don't mean we matter like we're
important, even though of course we are.
I mean we actually are matter.
Matter as you know is anything
that has weight and takes up space and
we did a whole video about it but what
is matter made of?
It's made of particles, so you, as a big
thing of matter, are made of particles.
The device you're watching this on is made
of particles.
Your dog is made of particles. You get
the idea. Particles are so tiny though
you can't see them.
Just picture them as super small balls
packed together to form an object and, how
an object looks and behaves, which we
call its properties, has a lot to do with
those tiny particles that it's made of.
Let's take a look.
You know that most
matter comes in three states: solid, liquid or gas.
Particles in a solid
are packed so tight that they don't move,
and they keep you from moving through it
like a brick wall.
Now don't try running through a brick
wall just trust me on this.
But in a liquid there's more space
between the particles.
That extra room between them allows them to slide around.
That's why you can stick an object into
or through a liquid,
like dropping a straw in a glass of soda or wading through a pool of water.
And there is so much space between the constantly moving particles in a gas that you can move around in them easily.
In fact when you walk from one side of the room to the other
you walk through a bunch of gases that
make-up air but, if something is a solid
will always stay a solid? Is a liquid
always a liquid? Do gases ever become non gases?
To find out if matter can change
states
let's find examples of when objects
properties change. Then we can figure out
what's happening to the particles.
Here's one, a candle it's solid right
made of wax
but, when you like the candle the pact
particles loosen up and the wax begins
to melt. Liquid wax.
So a solid can become a liquid now.
Here is another let's say you've got a pot of water on the stove. If you heat a liquid
up its particles will move around so
fast that they can hold on to each other.
When that happens all of the particles
fly apart and become a gas
like the steam you see when you boil
water. So a liquid can become a gas.
Okay one more. How about a forest on a
really cold night or even on your front
lawn when it's cold enough. Water vapor, a gas, in the air turns into tiny crystals of frost
which you see on trees or grass.
The free floating particles in the gas
join together and form a solid around
the plants.
So a gas can become a solid but my
favorite example of a state of change:
The Wizard of Oz, definitely. remember
when the Wicked Witch of the West melts
at the end? She totally goes from a solid
to a liquid.
Okay but, seriously what does all of this
mean? An object made of matter can change
its properties when it changes states
and, remember it doesn't make a
difference which state of matter an
object is in solid, liquid, or gas.
It's still always matter. To sum up
matter is everywhere matter is made of particles
Therefore, particles are everywhere. So
like I always say never trust a partical
they make up everything
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