Solids liquids and gases for kids – What are gases?-

Have you ever wondered what everything in the world is made from? 
The answer is matter.
Matter is anything that takes up space and has mass.
There are millions of different things in the world, but there are just three different forms of matter.
These are

  • solids, 
  • liquids, and 
  • gases. 

Everything in the world belongs to one of these three main forms.
You can probably think of hundreds of different solids and liquids.
Solids like stone and wood are hard and stay the same shape. Liquids like water and gasoline can flow from place to place.
But gases are different.

How do we use gases?

Did you know that the air around you is a mixture of gases? 
Like most gases, those in the air cannot be seen or smelled, and it is very difficult to make them stay in one place.
You can place a solid or a liquid in a cup or bowl, and it will stay there.
But gases must be kept in closed containers or they will escape.
There are many different kinds of gas.
Some are very useful.
Oxygen is an important gas. It is found in the air. It helps humans and animals to stay alive, and fires to burn.
Some gases come from under the ground. 
They are used as fuels and are burned for heating and cooking.
One kind of gas helps balloons to float up in the air.
Other gases help divers to breathe deep down in the sea.
Gases are also used in factories to make other useful substances such as plastics, bleach, and medicines. They are used in the manufacture of fertilizers, explosives, and dyes.

Read more

The Pinion-wheel Windmill – Homemade Toys The Pinion-wheel Windmill in Fig. 4 may be made of cardboard or tin. A circular piece 10 or 12 inches in diameter is required. Fig. 4.—A Pinion-wheel ...
What is color spectrum? The colors of the rainbow are red, orange, yellow, green, blue, and violet.But these are not the only colors in the rainbow.If you look carefully at a...
Wig Wag Signals and Wigwagging Wig Wag Signals and Wigwagging - excerpt from the book "The Scientific American Boy" by A. Russell Bond Our tramp adventure was really quite a blessi...
How to Make a Water Bike Water bicycles afford fine sport, and, like many another device boys make, can be made of material often cast off by their people as rubbish. The p...
Close Menu