Two: copper and oxygen.
Is world-widely used in the wires for energy transportation by the electrical companies of every country, for the telecommunications wires too. Many alloys are consisting of copper, such as bronze. A major factor for copper's importance is its availability as a natural resource and therefore its seniority as a metal in use. Other factors are its malleability and its low melting point.
Copper can react with other elements, such as oxygen, sulfur, and chloride to form an ore, copper oxide (CuO); tarnish, copper sulfide (CuS); and the salt, copper chloride (CuCl2) used in many chemistry labs.
There are two reactants in copper oxygen - copper (Cu) and oxygen (O2). When combined in a chemical reaction, they can form copper oxide (CuO).
Copper(II) oxide or cupric oxide or black copper oxide has 2 atoms per molecule: 1 copper atom and 1 oxygen atom. Copper(I) oxide or cuprous oxide or red copper oxide has 3 atoms per molecule: 2 copper atoms and 1 oxygen atom. These are the only stable oxides of copper.
There are 2 elements in potassium oxide, which are potassium and oxygen.
Copper oxide is composed of two elements: copper and oxygen. Copper oxide has a chemical formula of CuO, indicating that it consists of one copper atom and one oxygen atom.
There may be many that contain copper and oxygen in addition to other elements. The two that contain only copper and oxygen are copper (I) oxide and copper (II) oxide.
Is world-widely used in the wires for energy transportation by the electrical companies of every country, for the telecommunications wires too. Many alloys are consisting of copper, such as bronze. A major factor for copper's importance is its availability as a natural resource and therefore its seniority as a metal in use. Other factors are its malleability and its low melting point.
Copper can react with other elements, such as oxygen, sulfur, and chloride to form an ore, copper oxide (CuO); tarnish, copper sulfide (CuS); and the salt, copper chloride (CuCl2) used in many chemistry labs.
Nitric oxide (NO) has 2 elements: nitrogen (N) and oxygen (O).
Because copper is considered an element, and because elements do not include other elements, copper only contains copper.
The formula for cuprous oxide is Cu2O. The formula for copper is just Cu, although many copper items are not pure copper.
nitrous oxide, or N2O contains two elements, Nitrogen and Oxygen
Aluminium oxide has two elements: aluminium and oxygen.
There are two elements, namely sodium and oxygen.
Copper bonds with some other elements. We know it bonds with oxygen, and that's what makes copper darken in air as copper oxide forms. Sulfur is also an element that copper will bond with, and we see verdigris form on things made of copper when exposed to things with sulfur in them.
Iron oxide has two main chemical compounds: iron(II) oxide (FeO) and iron(III) oxide (Fe2O3). Both compounds consist of two elements - iron and oxygen.