Showing posts with label definite shape. Show all posts
Showing posts with label definite shape. Show all posts

Friday, October 29, 2010

Element and its Properties

It is the simplest form of Matter, which cannot be further simplified by any physical or chemical mean, is known as Element. There are about 113 elements, out of which 92 are natural, rest are man made.
Examples of Natural Elements are H, O, N, Fe, Na, etc. There are two properties of Elements
(1) Physical Properties: These are the properties which are associated with physical changes in a substance. Examples are color, shape, temperature, etc
(2) Chemical Properties: These are the properties which are associated with the fundamental composition of a substance. Examples are Bonding Nature, Catalytic properties or Magnetic properties etc

Matter and its states

Any thing which occupy the space and has a volume is called Matter. There are three States of Matter
(1) Solid: It is the state in which matter maintains a fixed volume and shape.
(2) Liquid: It is the state in which matter maintains a fixed volume but adapts to the shape of its container
(3) Gas: It is the state in which matter expands to occupy whatever volume is available