Uranium metal reacts with almost all non-metal elements (with an exception of the noble gases) and their compounds, with reactivity increasing with temperature. Hydrochloric and nitric acids dissolve uranium, but non-oxidizing acids other than hydrochloric acid attack the element very slowly. When finely divided, it can react with cold water; in air, uranium metal becomes coated with a dark layer of uranium oxide. Uranium in ores is extracted chemically and converted into uranium dioxide or other chemical forms usable in industry. COUNT 5
QSN1 What non-metal elements does uranium notably not react to? ANS1 noble gases QSN2 What coats uranium metal in air? ANS2 uranium oxide QSN3 Along with nitric acids, what acids dissolve uranium? ANS3 Hydrochloric QSN4 What is a notable form uranium ore is converted into after extraction? ANS4 uranium dioxide QSN5 What reacts with finely divided uranium? ANS5 cold water