News on Youtube Sep 3 2018

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For more infomation >> im back in the united states wooo - Duration: 0:02.

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Labor Day 2018 (United States) Celebrations - Duration: 1:49.

Today the Search Engine Google is celebrating Labor Day 2018 with Google Doodle in United

States of America.

Labour Day (Labor Day in the United States) is an annual holiday to celebrate the achievements

of workers.

Labour Day has its origins in the labour union movement, specifically the eight-hour day

movement, which advocated eight hours for work, eight hours for recreation, and eight

hours for rest.

For most countries, Labour Day is synonymous with, or linked with, International Workers'

Day, which occurs on 1 May.

For other countries, Labour Day is celebrated on a different date, often one with special

significance for the labour movement in that country.

Labour Day is a public holiday in many countries.

All across the United States, Americans observe Labor Day with block parties, barbecues, picnics,

parades, and trips to the beach.

Although the first Monday in September does signal the end of Summer, a day off from work

or school is always cause for celebration!

Amidst all the fun, let's not forget that Labor Day is a time to honor the social and

economic achievements of the American worker.

Inspired by the labor movement, Labor Day was intended to celebrate "the strength

and esprit de corps of the trade and labor organizations."

First adopted at the state level, it became a federal holiday in 1894.

Today's Doodle honors all hard-working people whether they be doctors, cooks, plumbers,

construction workers, or of any other profession.

Happy Labor Day , America

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For more infomation >> Labor Day 2018 (United States) Celebrations - Duration: 1:49.

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K12 Grade 3 - Science: Matter and its 3 States - Duration: 5:12.

Take a look around you.

What do you see?

You could be sitting on a chair surrounded by your classroom's four walls.

You could also be alone in your house right now.

All the things you see, even the wind you feel with your skin, are made of matter.

But wait a minute,

what is matter?

Matter is anything that takes up space and has mass.

We all know that the things around us take up space.

Mass, on the other hand, is how much matter you have in an object.

So for example, say you have one big red ball

and one small blue ball.

Both balls are made of matter.

They both take up space and have mass.

But, since the red ball is bigger,

that means it has more mass than the smaller ball.

It also takes up more space,

it can barely fit in your palm!

In comparison, the blue ball is smaller,

meaning it has less mass and takes up less space.

You can hold it easily in your hand, unlike the red ball.

You're able to hold them in your hands, right?

That's because they are in solid states.

You see, matter comes in different states.

They can be SOLID, LIQUID or GAS.

Matter that are in the SOLID state are things you can touch

like the walls of your house,

your classmate's hand,

your ballpen,

your notebooks,

and the bed you lie down in to sleep.

It's soft, yes, but it's still a solid object.

Matter that's in the LIQUID state can be the water you drink

and use to take a bath with.

It's also what makes up the seas you swim in when you go to the beach,

and the oceans where the dolphins and sea turtles live.

They are fluid.

The very air you breathe is also made of matter!

You can't always see it, but it's there.

It's in the gas state.

Wind is also an example of matter in the gas state.

You can't see it,

but when there are storms, you can feel the strong wind it brings.

Air--like liquid and solid--has mass and can also take up space.

Just imagine a balloon.

You fill it up with air.

The air inside it is taking up space,

that's why it expanded.

Of course, a balloon filled with air has more mass than an empty balloon,

because it's bigger and is taking up more space than the empty one.

Again, matter is anything that takes up space and has mass.

It is everything around us,

that's why it comes in many forms,

from solid (hard or soft objects)

to liquid (like water)

and gas (like air or wind).

It's quiz time!

Can you tell if these objects are solid, liquid or gas?

Sandwich

Juice

Pencil

Smoke

Coffee

Did you guess it correctly?

Let's have a look.

Sandwiches are solid.

Juices are liquid.

Pencils are solid objects.

Smoke is gas.

Lastly, coffee is also liquid.

Like this video, and click the subscribe and bell buttons below for more TPK Learning videos.

If you have any thoughts about today's topic, leave us a comment below!

For more infomation >> K12 Grade 3 - Science: Matter and its 3 States - Duration: 5:12.

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Trump Just Sent Feds In 6 States To Arrest All 364 Of Them Obama Ignored For Years - Duration: 5:18.

For more infomation >> Trump Just Sent Feds In 6 States To Arrest All 364 Of Them Obama Ignored For Years - Duration: 5:18.

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CHM 129 028 States of Matter - Duration: 3:06.

We can easily distinguish between the solid, liquid and gas states by inspection.

However, the properties of the states depend on the behavior of the particles that make

them up.

Also, it is important to note that not all substances can access the three phases.

Some compounds, such as table sugar, decompose before they can melt or boil.

We know that solids have a constant volume and shape.

This is due to close packing, or high density, of the particles in a solid.

Furthermore, the particles are not moving past one another, which is why solids do not

flow.

Like solids, liquids have a constant volume.

For example, a gallon of water that is spilled on the floor is still a gallon of water, until

it evaporates away.

However, liquids flow and take the shape of their container.

Like solids, the particles in liquids are closely packed, and thus have high densities.

However, the particles in a liquid are moving past one another, which allows liquids to

flow.

Because of this higher molecular motion, liquids have higher kinetic energy than solids do.

Gases have a changeable volume and shape.

Like liquids they flow, but unlike solids and liquids they are compressible and can

expand quite a bit.

Gases have low density because there is much empty space between the particles and the

particles are moving extraordinarily quickly – some faster than the speed of sound at

room temperature.

Thus gases have the highest kinetic energy of the three phases.

Table one point six of your text book does a great job of summarizing the macroscopic

properties of the states as well as the microscopic or molecular properties.

A point I didn't make t was the attraction between particles which is strongest in the

solid, strong but not quite as strong in the liquid and practically non-existent in the

gas phase.

In the language of chemistry, the word reaction means a change.

Physical reactions are changes where no new chemicals are formed.

Some physical reactions that are important to chemists include state changes, such as

melting, or solid to liquid, or boiling or liquid to gas.

When a pure substance melts or boils it doesn't change its composition or form a new chemical,

it just changes its state.

What the molecules are doing.

So ice, water and steam are all the same chemical, but their behavior is different because the

molecular motion and attractive forces and density is different.