Basics of Chemistry-Compounds and Mixtures

Compounds and mixtures are two more important parts of chemistry. 

Mixtures
Mixtures are a combination of two or more substances that are mixed simply.This is a physical change and the original substances can be obtained from the mixture.A common example of a mixture is Salt water.Sand mixed with water is also a mixture.

Compounds
Compounds and mixtures are almost same.But in a compound,two or more substances are chemically combined.This is a chemical and irreversible change and the original substances cannot be obtained.A common example of a compound is water.