Using the properties of materials to separate mixtures

Using the properties of materials to separate mixtures

QUESTIONS

• What is a compound?
• What is a mixture?
• Are substances lose their properties when they form compounds?
• Are sbstances lose their properties when they form mixtures?

What are the differences between
the mixture and compound?
Compounds are substances formed by the chemical combination of two or more elements. 
The properties of compounds are unique to themselves and need not necessarily reflect the properties of the constituent elements.
A new substance is formed after the constituents are chemically combined. So, a compound has different properties from its constituents.
Mixtures are substances that are formed by physically mixing two or more substances.
The constituents of a mixture do not lose their properties and so, the properties of a mixture are generally the sum of the properties of its constituents.
No new substances are formed in mixtures and their properties are dependent on the properties of their respective constituents.
Water, salt, baking soda, etc.
Oil and water, sand and water, smog (smoke + fog), etc.
Can we separate them?
Compound can only be separated by either chemical or electrochemical methods (like extraction).
Mixtures can be separated into their constituents via physical separation methods such as filtration. 
CuSO4 +H2O
CuSO4 (crystals)