Molecules may be concisely described as combinations of atoms joined to one another via their electrons. However, this is a generalization. There are a few exceptions.
To begin to understand what a molecule is, you first need to know what types of molecules are there. There are three types.
I shall begin with diatomic molecules. The word "diatomic" comes from the ancient Greek language. The prefix "di" meaning "two"; and "atomic" pertaining to atoms. So as the translation implies, a diatomic molecule is a molecule that is comprised of two atoms joined to one another. They may or may not be of the same element. Examples of some common diatomic molecules are O2 (Dioxygen/Oxygen), H2 (Dihydrogen/hydrogen), HCl (Hydrogen chloride) and NaCl (Sodium chloride; table salt).
Next comes polyatomic molecules. The word "polyatomic" also comes from the ancient Greek language. The prefix "poly" means "many"; and like in diatomic, the word "atomic" is defined as pertaining to atoms. So, a polyatomic molecule is a molecule made up of three or more atoms; which, as in diatomic molecules, may or may not be the same element. Examples of a few polyatomic molecules are P4 (White phosphorus), H2SO4 (Sulfuric acid), SiO2 (Silicon dioxide; sand), H2O (Water) and C12H22O11 (Sucrose; table sugar).
Both diatomic and polyatomic are more commonly known as "compounds".
And finally, monatomic molecules. The word "monatomic", as in the two prior molecule types is of ancient Greek origin. The prefix "mon" comes from the Greek word "mono", meaning "one"; and once again, "atomic" is pertaining to atoms. Therefore, as the name implies, monatomic molecules are only comprised of a single atom, with no bonds to other atoms. Monatomic atoms are most prevalent in nature in the form of the noble gasses. Those being, in alphabetical order: argon, helium, krypton, neon, radon, ununoctium and xenon. Though most noble gasses don't naturally form compounds, a number have been synthesized. The noble metals (Such as gold and Mercury) may also exist in a monatomic form, but they're more commonly found in compounds.
How and why atoms form bonds to become molecules is a far vaster subject. I've placed some URL's in the related links section below that should aid in explaining the process.
A molecule( /ˈmɒlɪkjuːl/) is an electrically neutral group of two or more atoms held together by covalent chemical bonds.[1][2][3][4][5][6] Molecules are distinguished from ions by their electrical charge. However, in quantum physics, organic chemistry, and biochemistry, the term moleculeis often used less strictly, also being applied to polyatomic ions.
By:Baby Rose Ann B. Dudas :)
The term that describes the arrangement of atoms within a molecule is called molecular structure. It defines the relative position of atoms and their bonds in a molecule, which influences the molecule's properties and reactivity.
The molecule shown is benzene.
A molecule is the term that describes a combination of two or more atoms bonded together.
The molecule contains a carboxylic acid functional group.
This chemical reaction is an example of a condensation reaction, where two smaller molecules (glucose and fructose) combine to form a larger molecule (sucrose) with the elimination of a smaller molecule (water).
(Ethane) Saturated Alkane
Low concentration to high concentration; ATP is used
bent
The molecule to which a drug binds.
The term that describes the arrangement of atoms within a molecule is called molecular structure. It defines the relative position of atoms and their bonds in a molecule, which influences the molecule's properties and reactivity.
Large Molecule ok get it? hahaha :p
The tail of a phospholipid molecule is hydrophobic, while the head is hydrophilic.
The molecule shown is benzene.
A molecule is the term that describes a combination of two or more atoms bonded together.
carbohydrates
permeability
permeabiity