Matter:

Matter is anything that has mass and occupies space. It is the substance that makes up the physical world around us. Matter can exist in various forms, including solid, liquid, and gas. It is composed of tiny particles called atoms, which are the building blocks of matter.

Is Matter Around Us Pure?

Definition of Pure Substance:
A pure substance is a form of matter that has a definite composition and distinct properties. It cannot be separated into other substances by physical means.

Classification of Matter:
Matter can be classified into two categories: pure substances and mixtures.

1. Pure Substances:
A pure substance consists of only one type of particle. It can be further classified into two types: elements and compounds.

a. Elements:
An element is a pure substance that cannot be broken down into simpler substances by chemical means. It is made up of a single type of atom. Examples of elements include hydrogen, oxygen, carbon, etc.

b. Compounds:
A compound is a pure substance composed of two or more elements chemically combined in a fixed ratio. It has different properties than its constituent elements. Examples of compounds include water (H2O), sodium chloride (NaCl), etc.

2. Mixtures:
A mixture is a combination of two or more substances that are not chemically combined. It can be further classified into homogeneous and heterogeneous mixtures.

a. Homogeneous Mixtures:
Homogeneous mixtures have a uniform composition throughout. The components of a homogeneous mixture are evenly distributed and cannot be visually distinguished. Examples of homogeneous mixtures include saltwater, air, etc.

b. Heterogeneous Mixtures:
Heterogeneous mixtures have an uneven composition, and the components can be visually distinguished. The particles of a heterogeneous mixture are not uniformly distributed. Examples of heterogeneous mixtures include soil, salad, etc.

Conclusion:
In conclusion, matter around us can be classified as pure substances and mixtures. Pure substances are further divided into elements and compounds, while mixtures can be homogeneous or heterogeneous. It is important to understand the classification of matter in order to study its properties and behavior.

Anything that occupies space and has mass is called matter.