States of Matter

Topics: Gas, Liquid, Temperature Pages: 2 (470 words) Published: January 4, 2011
Topic:States Of Matter

What is matter?
Matter is anything that has mass and occupies space. All matter can exist in three(3)states. There are: solid, liquid and gas. In addition, all matter is made up of particles: atoms, molecules and ions.

In the solid state state, the particles are packed closely together in a regular manner. The focus of attraction between these particles are very strong and as a result solids are usually very hard and very difficult to compress. Futhermore, the solids cannot move out of position, causing solids to have a fixed volume and a definite shape. In addition, the particles in a solid have a very small amount of kinectic energy.

A liquid has a definite olume but no shape of its own. It will take the shape of its container. A liquid can be expanded or compressed slightly. The focus of attraction between the particles of a liquid are fairly weak in comparison. As a result, although the particles are intact they can easily slide past each other. Futhermore, the particles are randomly arranged with small spaces between them. The particles of a liquid move slower than those of a gas but faster than those of a solid.

On heating a liquid, some of the particles will gain sufficient energy to allow them to break away and become a gas. A gas expands to fill its container that is, it does not have a definite size nor volume, neither does it have a definite shape. Gases always spread out to occupy all the space available to them. Gases are very easily expanded or compressed. Tgeir particles are randomly arranged with very large spaces and weak forces between them. Of the three(3) states of matter, the particles if a gas move the fastest and have the largest amount of energy.

Changing states
The state that a substance exists in depends on the temperature and pressure.

Sublimation is the process in which a substance changes from a solid to a gas or from a gas to a solid...
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