distinguish between compound and mixture
Answers
Definition of Compound
Compound means a substance formed as a blend of various elements chemically in a certain proportion, by weight. It is entirely new substance, which possesses properties different from that of its constituent substances. For example – Water, salt, carbon dioxide, sodium chloride, etc.
The compound is the unification of various elements so that the atoms present in the elements are clasped together by the chemical bond, which cannot be easily split. Bonds are created out of sharing of electrons among atoms. So, there are different types of bonds:
Covalent bond: A chemical bond in which exchange of a pair of electrons between atoms takes place, is known as a molecular bond or covalent bond.
Ionic bond: A chemical bond, wherein whole sole transmission of valence electrons between atoms takes place is called the ionic bond.
Metallic bond: Bond occurring as a result of electrostatic attraction between metallic ions and conduction electrons.
Definition of Mixture
When two or more substances are put together, in any ratio such that no chemical reaction takes place, the material comes out, is a mixture. For example – Sand and water, sugar and salt, air, etc.
In a mixture, the properties of the components are retained even after they are mixed, as a solution, suspension and colloids. The combination should be capable of being separated back to normal through physical means. These are made up of a diverse range of molecules which are arranged in two ways:
Homogeneous mixture: A uniform mixture, wherein the constituents cannot be distinguished easily by way of simple observation.
Heterogeneous mixture: A mixture in which ingredients are of difference shape, size or state and are easily distinguished through simple observation.