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
Solid Foundation but it was delayed by several hours. Before the mixtape's release, a promotional vlog directed by Keemotion was released. Jake Rohn for "BET" wrote, "For fans who enjoy the hard-hitting beats that have established the South in the mainstream, "Solid Foundation" is exactly what it's [sic] name suggests, but as a group, Quality Control Music still has a ways to go if they're looking to keep building." Solid Foundation Solid Foundation is the debut compilation mixtape by the record label Quality Control Music. It was released on February 3, 2014. It features artists from the label including Migos, Rich The