what the relationship between an atom and a molecule
Best Answer: An atom can be any one of the elements. A molecule is a combination of atoms into a single substance. A compound is a molecule that includes atoms of two different elements. Organelles are parts of cells made up of many, many atoms, such as the mitochondria. Elements are the simpliest form of complete matter, for example a single hydrogen (H) atom.
Answers. 1  Elements are the simpliest form of complete matter, for example a single hydrogen (H) atom. When atoms combine and share electrons, they form compounds or molecules, such as H2O, water. When many very complex compounds combine in a very unique manner within a cell, they form the necessary parts of that cell organs or organelles.