Gas

Gas is one of the four fundamental states of matter (the others being solid, liquid, and plasma). A pure gas may be made up of individual atoms (e.g. a noble gas like neon), elemental molecules made from one type of atom (e.g. oxygen), or compound molecules made from a variety of atoms (e.g. carbon dioxide). A gas mixture would contain a variety of pure gases much like the air. What distinguishes a gas from liquids and solids is the vast separation of the individual gas particles. This separation usually makes a colorless gas invisible to the human observer. The interaction of gas particles in the presence of electric and gravitational fields are considered negligible as indicated by the constant velocity vectors in the image. One type of commonly known gas is steam.

The gaseous state of matter is found between the liquid and plasma states, the latter of which provides the upper temperature boundary for gases. Bounding the lower end of the temperature scale lie degenerative quantum gases which are gaining increasing attention. High-density atomic gases super cooled to incredibly low temperatures are classified by their statistical behavior as either a Bose gas or a Fermi gas. For a comprehensive listing of these exotic states of matter see list of states of matter.

Sweet Emotion

"Sweet Emotion" is a song by the American rock band Aerosmith, released by Columbia Records on May 19, 1975 on the album Toys in the Attic and was released as a single a month later on May 19. The song began a string of pop hits and large-scale mainstream success for the band that would continue for the remainder of the 1970s. The song was written by lead singer Steven Tyler and bassist Tom Hamilton.

Success

"Sweet Emotion" was released as a single in 1975, and peaked at #36 on the Billboard Hot 100, becoming the band's breakthrough single and their first Top 40 hit. The day it hit #36 on the U.S. chart, July 19, 1975, Aerosmith was booked at a gig in New York City's Central Park, called the Schaefer Music Festival. The song was so successful that the band decided to ride the heels of success and re-release their first single, "Dream On", which had originally charted at #59 in 1973. The re-released version went on to hit #6, the highest chart performance in the 1970s for the band. "Sweet Emotion" remains successful in the modern day, having sold over 3 million digital downloads.