The matter construction and the properties of the molecules of the matter

The molecules

The matter consists of very small structural units known as the molecules, The molecule is the smallest part of the matter which can exist freely, and it has the properties of the matter.

The properties of the molecules of the matter

The molecules of the matter are in a continuous motion and there are intermolecular spaces and attraction forces among the molecules of the matter, The kinds of the molecules are the element, the compound and the mixture.

The intermolecular spaces are the spaces that are found among the molecules of the matter, The intermolecular force is the force that bounds the molecules of the matter together.

The molecules of one substance are alike in properties, but they differ from the other substance molecules, The molecules are composed of tiny structural units called the atoms.

The difference in the molecules of the various substances is found as the result of the difference of the atoms which are involved in the structure of the molecule and depends on the number and the kind of the atoms, and the way of the combination together.

The element molecule

The element is the simplest pure form of the matter which can not be analyzed chemically into the simpler form, The element molecule is formed of the similar atoms (one or more atoms) that combine together.

Monoatomic elements

There are elements molecules that formed of only one atom (The Monoatomic) such as, the solids as (Copper, Iron, Aluminum, Sulphur, Magnesium and Carbon) and the liquids as mercury.

The noble gases such as (Helium, Neon, Argon, Krypton, Xenon and Radon).

Diatomic elements

There are elements molecules that formed of two atoms (Diatomic) such as

The liquids as bromine.

The active gases such as (Oxygen, Hydrogen, Chlorine, Nitrogen and Fluorine).

Oxygen molecule
Oxygen molecule is an active gas, and the molecules of the active gases are diatomic.
The compound molecule
The compound molecules
The compound molecule is formed from different atoms.

The compound molecule is formed of the different atoms and it is a substance which is formed from a combination of the atoms of two or more different elements with the constant weight ratios.

Examples of compound molecules: 

Sodium chloride molecule (table salt), Water molecule, Ammonia molecule, Hydrogen chloride.

Matter, Properties & Kinds of molecules, Melting process & Vaporization process

Theories explaining the covalent bond, Octet rule & Overlapped orbitals concept

The properties of the molecules of the matter

What are the kinds of molecules?

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