Lithium be cut with a knife. When cut, it possesses a silvery-white color that quickly changes to gray as it oxidizes to lithium oxide. While it has one of the lowest melting points among all metals (180 °C), it has the highest melting and boiling points of the alkali metals. Lithium has a very low density (0.534 g/cm), comparable with pine wood. It is the least dense of all elements that are solids at room temperature; the next lightest solid element (potassium, at 0.862 g/cm) is more than 60% denser. Furthermore, apart from helium and hydrogen, it is less dense than
Extraordinary assumptions and hypothetical conditions on a hypothetical condition only under certain additional more restrictive conditions, specifically These requirements are specified in All USPAP standards dealing with appraisal reporting require that any written and oral appraisal report clearly and accurately disclose all assumptions, extraordinary assumptions, hypothetical conditions, and limiting conditions used in the assignment. These same reporting standards require that the reporting of appraisal assignment results must "clearly and conspicuously" state all extraordinary assumptions and hypothetical conditions and state that their use might have affected the assignment results. Appraisal reports written where USPAP compliance is a requirement or assignment condition will usually be written with