The relationship between atoms and molecules is the way molecules are made up of atoms. Atoms that are in groups of two or more are called molecules. More »

Electronegativity in atoms causally relates to polarity in molecules, as different electronegativities in different components of an asymmetrical molecule cause that molecule to be polar. However, electronegativity diffe... More »

Density and mass are mutually dependent physical properties, with density being equal to the amount of mass per unit of volume of any particular object or substance. The mass of any object depends entirely on its overall... More »

In 1905, Albert Einstein published an analysis in which he devised a mathematical way to predict the size of both atoms and molecules. At the time, the science of atoms was still in its infancy, but Einstein's test was c... More »

In chemistry, 6O2 is six molecules of O2, which equals 12 atoms of oxygen. The "O2" is a molecule of oxygen gas, while the "6" indicates that there are six such molecules. More »

The atomic theory formulated by the British chemist John Dalton proposes that atoms are indivisible particles comprising all matter; atoms of the same element share identical properties, including shape, size and mass; a... More »

Daniel Bernoulli's kinetic theory of matter states that all things – liquids, solids or gases – are made up of atoms and molecules that are in constant motion. The theory also states that collisions between atoms and mol... More »