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.
This happens via a chemical reaction. A molecule is the smallest amount of a chemical substance that can exist. Essentially, a compound is a type of molecule. A molecule can be made up of two or more atoms of the same element or two or more atoms of different elements. However, compounds are molecules that are made up of atoms of different molecule. Atoms are the basic units that all matter is made of. Atoms are tiny, ranging from 0.1 to 0.5 nanometers in width.