 
 <prompt> Wetin be di crystal wey dey form for hotter temperatures? Based on di previous question, write one context wey contain di answer. E fit be 1 - 20 sentences. Context: <response>: "Uranium metal wey dem heat reach 250 to 300 °C (482 to 572 °F) go react with hydrogen to form uranium hydride. If you heat am reach higher temperatures, e go remove the hydrogen. Dis property dey make uranium hydrides useful as starting materials to create reactive uranium powder and other compounds like uranium carbide, nitride, and halide. Two different crystal forms of uranium hydride dey: one wey be α form wey you fit get for low temperatures and another one wey be β form wey you fit get if the formation temperature pass 250 °C." 