Thursday, October 14, 2010

Elements

Before we can proceed to learn what are elements, it is important to know what is matter.Matter is any substance that has mass.Matter is classified into two categories: Pure substances and mixture.

Pure substances are made up of only one element whereas a mixture is a material containing two or more elements or compounds that are in close contact and are mixed in any proportion. The components of mixtures can be separated by physical means.

Elements come under pure substances.They are the smallest matters that exist on earth.It cannot be further divided into simpler substances by ordinary processes. Oxygen and  hydrogen are one of them.There are 114 elements found out of which 92 of them occur in nature.Elements are also sub-divided into metal and non-metal.Iron is an example of metal and sulphur is is an example of non-metal.

Elements are the basic building of  every object or things that exist on Earth.Water is formed from oxygen and hydrogen.Forming process may vary but everything has element in it.

Next time i will share with you a learning on general chemical.

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