Matter In Our Surroundings

By : Nidhi Singh

Before the 20th century, the term matter included ordinary matter composed of atoms,and excluded other energy phenomena such as light or sound. This concept of matter may be generalized from atoms to include any objects having mass even when at rest, but this is ambiguous because an object's mass can arise from its (possibly-massless) constituents' motion and interaction energies. Thus, matter does not have a universal definition, nor is it a fundamental concept, in physics today. Matter is also used loosely as a general term for the substance that makes up all observable physical objects.Anything that occupies space and has mass is known as matter.

What is Matter????

There are three states of Matter……

Solid

Liqiud

Gas

States Of Matter

A large number of particles together constitute matter.

These particles are of very small size. Particles of matter have spaces among

them. Particles of matter are in continuous motion

i.e. they possess kinetic energy. Particles of matter attract each other i.e.

inter particle forces of attraction or intermolecular forces.

Characteristics of Matter

They have a definite shapeThey have a definite massThey are highly rigidThey can not flowThey have a definite volume

Physical State of Solid……

Physical states of Matters and Properties

They have a definite massThey don’t have a definite shape

They are less rigidThey can flowThey have no definate volume

Physical State of Liquid

They have a definite massThey don’t have a definite shape

They are not rigidThey don’t have a definite volume

They are not rigid

Physical State of Gases

When a liquid changes into vapour at any temperature below its boiling point at atmospheric pressure it is known as evaporation….

Evaporation

Sublimation is a change of state directly from solid to vapour without changing into liquid or (vice versa) at atmospheric pressure .

Sublimation

Latent means hidden. The energy which is required to change 1kg of solid into liquid at atmospheric pressure to its melting point is known as the latent heat of fusion……

Latent heat of Fusion