It was not until knowledge about atoms and elements was gained that the make-up of the millions of different substances around us was understood. All the scientific knowledge we have today indicates that these different substances are made from only 92...

Matter consists of atoms and molecules. Atoms are the smallest units of matter that retain the physical and chemical properties of individual elements. Molecules, however, consist of two or more atoms chemically bonded together. Molecules generally...

A molecule is defined as the smallest particle of an element or a compound that possesses the properties of the original substance. Some materials, such as helium, neon, and argon, tend to form monoatomic molecules. Most molecules, however, are made of...

Smallest identifiable unit into which a pure substance can be divided and retain its composition and chemical properties. Division into still smaller parts, eventually atoms, involves destroying the bonding that holds the molecule together. For noble...

The smallest particle into which a substance can be divided without changing its chemical properties. A molecule of an element consists of one atom or two or more atoms that are similar. A molecule of a compound consists of two or more different...

The smallest portion of a substance that can exist in the free state and retain the physical and chemical properties of the...

Composed of individual atoms (see ATOM), a molecule is the smallest quantity of a substance that retains the properties of that...

In chemistry, a molecule is defined as a sufficiently stable electrically neutral group of at least two atoms in a definite arrangement held together by strong chemical bonds.[1][2] In organic chemistry and biochemistry, the term molecule is used less...