CDs & Vinyl. Browse best sellers, new releases, AutoRip CDs and vinyl records, deals, vinyl records, digital music, used music, and trade-in. Import your music to your Amazon Music Library and enjoy your music everywhere. Encore: Movie Partners Sing Broadway.
The experiment aims to clarify the meaning of purity in the chemical sense ; apply the method of recrystallization in the purification of a solid sample; recognize melting point as a physical property that can serve as an index of purity; determine the melting point of a substance using a simple apparatus; and compare the melting point of a pure versus impure sample of a substance.
The boiling point of.a liquid can change if the pressure at the liquid's surface changes. Since pure substances have a distinct boiling point, boiling points are sometimes used to determine the purity of substances. The melting point is the temperature at which a solid is converted to liquid.