What is Chemistry?

Chemistry plays an important part in all of the other natural sciences,basic and applied.Plant growth and ,the formation of igneous rocks, the role played by ozone in the atmosphere, the properties of lunar soil.Chemistry is the part of our body.It is easy our life.A sample of matter can be either a pure substance or a mixture.A pure substance has a fixed,characteristic composition an fixed , define set of properties.Pure substance are of example copper, salt,diamond,water .oxygen,mercury ,vitamin c and ozone.A pure substance may be a single element,such as copper or oxygen or a compound of  tow or more elements in fixed ratio,such as salt tab sugar,
A mixture is a collection of pure substance simply mixed composition is variable,as are its properties Examples of mixtures are milk,wood ,concrete.saltwater,air,granite,air,motor oil, chocolate and elephants.