Is it possible to run out of chemicals and chemical elements?

The law of conservation of mass or principle of mass conservation states that for any system closed to all transfers of matter and energy, the mass of the system must remain constant over time, as system's mass cannot change, so quantity cannot be added nor removed. Hence, the quantity of mass is conserved over time. read more

For example, in chemical reactions, the mass of the chemical components before the reaction is equal to the mass of the components after the reaction. Thus, during any chemical reaction and low-energy thermodynamic processes in an isolated system, the total mass of the reactants, or starting materials, must be equal to the mass of the products. read more

Chemical elements are defined by the number of protons in the nucleus of the element. All the natural elements from 1, Hydrogen, to 92, Uranium, have been discovered. In the case of element number 2, Helium, it was actually discovered in the Sun before being found on Earth. read more

When the term "chemical element" is used, it can refer to a single atom of that atom or to any pure substance consisting only of that type of iron. For example, an iron atom and a bar of iron are both elements of the chemical element. read more