Oxygen and silica
Silicon dioxide (SiO2) and sodium carbonate (Na2CO3) are the two main elements that make up the compounds in glass. Silicon dioxide provides the structure and strength, while sodium carbonate helps lower the melting point and make the glass workable.
Carbon and hydrogen
main group elements
The two main elements that make up most of Earth's core are iron and nickel. These heavy metals are believed to be the primary components that give the core its dense and solid nature.
The two elements in the main coordinate used for absolute location are latitude and longitude. Latitude specifies the position north or south of the equator, while longitude specifies the position east or west of the prime meridian.
Silicon dioxide (SiO2) and sodium carbonate (Na2CO3) are the two main elements that make up the compounds in glass. Silicon dioxide provides the structure and strength, while sodium carbonate helps lower the melting point and make the glass workable.
Clean silica sand is the main component, with various elements for colouring, or for lowering the melting point of the glass liquid.
The two elements that make up both glass and concrete are silica (silicon dioxide) and calcium. Silica is a primary component in both materials, providing strength and durability. Calcium is used as a binder in concrete and also plays a role in the chemical composition of glass.
Carbon and hydrogen
Hydrogen and helium
The two main elements found in stars are hydrogen and helium. These elements are the most abundant in stars and are essential for nuclear fusion reactions that power a star's energy generation.
mainly water ,they are two basic elements of combustion.
The main elements of lpg are, butane , methane(CH4) and etyl mercaptan.
Austin Draves
hydrogen and methane
The two main parts are the Head and Body.
Carbon and Nitrogen