Oxygen and silica
Carbon and hydrogen
Your everyday glass is made of silica, a sand composed of silicon dioxide, silicon and oxygen.
The two elements that make up steel are iron and carbon. Other elements can also appear in the steel, but these two are the ones that cause it to be called steel.
main group elements
A compound contains two or more different elements chemically combined in a definie ration. Since glass does not have a definite ratio of elements it cannot be considered a compound. Hope this helps straight from the chem book :)
The two elements present in largest atomic percentages in both glass and concrete are silicon and oxygen.
The main elements of lpg are, butane , methane(CH4) and etyl mercaptan.
The two most abundant elements in a main sequenced star are Hydrogen(H) and Helium(He).
Clean silica sand is the main component, with various elements for colouring, or for lowering the melting point of the glass liquid.
Carbon and hydrogen
Hydrogen and helium
mainly water ,they are two basic elements of combustion.
There are at least two possible answers to this question. The two most usual ones are probably: metals, nonmetals, and metalloids; or main group, transition elements, and inner transition elements.
Weather and Precipitation.:):)
The two main parts are the Head and Body.
Austin Draves