Uranium is a reactive metal and can react with all nonmetals and metalloids (excepting noble gases); also many alloys of uranium are known.
Uranium don't exist as a pure metal in ores; uranium react with many other elements.
reactivity
Uranium doesn't react with noble gases.
Chemical
The ability to react with other substances is a chemical property.
Uranium is a very reactive element; uranium can form alloys or compounds with the majority of the other elements. Uranium is also soluble in nitric acid.
Other Substances
yes
yes
Uranium easy react with oxygen.But being a reactive metal uranium can be combined with the majority of elements forming compound or alloys.
The failure to react with other substances is an intensive property. Intensive properties do not depend on the amount of a substance present, whereas extensive properties do. In this case, the inability to react with other substances remains the same regardless of the quantity of the substance.
It means that it is inert: does not react with other substances.