Part of the Pacific Ocean is not warming as expected, buy why?

State-of-the-art climate models predict that as a result of human-induced climate change, the surface of the Pacific Ocean should be warming—some parts more, some less, but all warming nonetheless. Indeed, most regions ...

The competitive benefits of a modern energy system

As the EPA retreats from the Clean Power Plan's goal of reducing greenhouse gases and promotes President Trump's 19th-century coal-fired energy policy, states like New York and California are aggressively modernizing their ...

Soon, air pollution could be measured on every street corner

Air pollution is responsible for 550,000 premature deaths a year in Europe and 7 million worldwide, according to the WHO. Measuring it can be a challenge, however, as the equipment tends to be large and expensive. But soon, ...

Britain to intensify fight against climate change

Britain's outgoing prime minister on Wednesday announced plans to eliminate the country's net contribution to climate change by 2050 as Europe's effort to slow global warming picked up speed.

The epic search for oldest ice in Antarctica

On 1st June 2019, the European Beyond EPICA Oldest Ice Core project started with the aim of drilling for and recovering ice from up to 1.5 million years ago in Antarctica. The previous EPICA project recovered ice from 800,000 ...

Biden, Warren propose new plans to combat climate change

Former Vice President Joe Biden on Tuesday unveiled a $1.7-trillion, 10-year plan to combat climate change, the latest entry in a spate of proposals from Democratic White House hopefuls to address a global environmental issue ...

Coal-hungry S.Africa introduces carbon tax

South African President Cyril Ramaphosa has signed into law a carbon tax to cut emissions in the continent's worst polluter, the treasury said Monday, drawing cautious praise from environmentalists.

page 1 from 1

Gas

Gas is one of the three classical states of matter (the others being liquid and solid). Near absolute zero, a substance exists as a solid. As heat is added to this substance it melts into a liquid at its melting point (see phase change), boils into a gas at its boiling point, and if heated high enough would enter a plasma state in which the electrons are so energized that they leave their parent atoms from within the gas. A pure gas may be made up of individual atoms (e.g. a noble gas or atomic 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.

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 increased attention these days. 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.

This text uses material from Wikipedia, licensed under CC BY-SA