Welcome to the International Home Care Nurses Organization. The International Home Care Nurses Organization is a world-wide network of nurses interested in promoting excellence in home-based healthcare throughout the world. We strive to achieve this goal through three initiatives:
The definition of a molecule is the smallest amount of something, particularly of a chemical substance, that can exist on its own. An example of a molecule are two atoms of hydrogen.
Molecule. the smallest particle of a substance that can exhibit all the chemical properties of the substance. A molecule is composed of atoms (more precisely, of atomic nuclei, their surrounding inner electrons, and their outer valence electrons, which form a chemical bond). The inner electrons of atoms usually do not participate in the formation of such bonds. The molecular composition and structure of a given substance do not depend on the method of preparation used. In the case of monatomic molecules (for example, inert gases), the concepts of the molecule and the atom are congruent.