Pure Substance and Mixture

We have understand that pure substance is not combination of many atoms and is made up of one kind of element of element or compound while mixture is combination of different substance which are not chemically linked.

Pure Substance and Mixture Example

Example of Pure Substance include elements like gold, aluminium and compound like water, carbon dioxide are pure substances.
Example of Mixtures include the substance in which the composition can vary like air, milk, oil and water, etc. are mixtures.

Difference between Pure substance and Mixture

The key differences between pure substance and mixture are listed in the following table:

Characteristics	Mixture	Pure substance
Definition	A combination of two or more substances that are physically mixed but not chemically bonded.	A substance that consists of only one type of element or compound.
Composition	Can have variable composition, with different substances in different proportions.	Always has a fixed and constant composition.
Separation	Components can be separated using physical methods, such as filtration, distillation, or evaporation	Cannot be separated into different substances by physical means.
Homogeneity	May be homogeneous (uniform composition) or heterogeneous (non-uniform composition).	Homogeneous throughout (uniform composition).
Properties	The properties of a mixture are a combination of the properties of its individual components.	Exhibits unique chemical and physical properties that are characteristic of the substance.
Chemical Changes	No new substances are formed when components are mixed.	Can undergo chemical reactions to form new substances.
Examples	Examples include air (a mixture of gases), salad, and a sand and salt mixture.	Examples include elements like oxygen, compounds like water, and pure metals like gold.

Also Check

Chemical Formula of Common Compounds

Difference Between Molecules and Compounds

Difference Between Compound and Mixture

Pure Substance

Pure Substances in Chemistry are those which consist of only one type of atom or in the case of more than one type of atom they are always combined in a fixed ratio. What we consider as Pure is not a Pure Substance as per the definitions of chemistry. For Example, we consider milk as pure when it has no adulteration however as per definitions of chemistry Milk is not a Pure Substance.

All the matter around us is classified as Pure Substance and Mixture. Pure Substance forms the basis of all the important chemical compounds. In this article, we will learn about the Pure Substance in detail, learning about the properties and types of pure substance and its comparison with mixture.

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