Up to uranium elements are made by stellar nuclear synthesis; after uranium elements are man made.
elements after uranium (atomic number 92) are all artificially made.
Elements that have greater atomic masses then uranium are created using nuclear fission.
Heavy elements.
The only element needed to start nuclear fission is Uranium-235, which is very slightly radioactive but when made into fuel rods and before any use in a reactor can be handled without danger.
No. Alloys are mixtures made up of elements like:steel- made up of iron and carbon. Iron and carbon are elements but steel isnt.
Uranium is not made of any material because Uranium is an element and elements are not made of something else.
Light elements are made in light weight stars via stellar nucleosynthesis. Elements as heavy as iron form in the cores of massive stars. Anything heavier than iron requires a supernova--the collapse and explosion of a super massive star.
Iron co2 silicon oxygen potassium .... and lots of other stuff hi!
Fortunately, no !
Man-hole covers (inspection covers) are made from heavy, thick cast-iron. Gates can be made from wood or metal.
elements after uranium (atomic number 92) are all artificially made.
Iron & Fluorine
Uranium is an element; it cannot be 'made' as it were. It is similar to iron or oxygen in that respect.Only supernova explosions are powerful enough to actually make uranium or any element heavier than nickel and iron. Some uranium can be made in nuclear breeder reactors or in labs by bombarding thorium samples with neutrons.
Iron sulphide (FeS) is made of two elements, viz. Iron(Fe) & Sulphur(S).
Elements that have greater atomic masses then uranium are created using nuclear fission.
No, Uranium is naturally occurring. But all elements beyond uranium are man-made.
When it comes to heavy elements that are used in weapons and in reactors, uranium and plutonium are both candidates. The first atomic bombs were made of uranium, and they are now pretty much made of plutonium. Some special nuclear reactors are powered by plutonium fuel, but most reactors for power generation use (enriched) uranium for fuel. Links are provided to relevant articles posted by our friends at Wikipedia, where knowledge is free.