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Difference between vapor and gas The term gas refers to a substance that is in its gaseous form or a substance that has a single defined thermodynamic state at room temperature whereas a vapor refers to a substance that is a equilibrium between two phases at room temperature, namely gaseous and liquid phase. All matter on earth exists in any of the three states: solid, liquid or gaseous. 'Gas' refers to a substance in the gaseous state. Gases do not have either shape or volume. However, the term 'vapor' or 'vapour' refers to a substance in equilibrium between two phases, usually liquid and gaseous. Vapor is not a state of matter but is a specific type of gas. Gases are in a gaseous state at room temperature. The molecules in a gas can expand to occupy any available volume as there is very little inter molecular attraction. On the other hand, the molecules of a vapor gain energy and vaporize from a substance which is either a solid or liquid at room temperature. For example, steam is a water vapor that turns into water at room temperature. Oxygen, which is a gas, will still be a gas at room temperature. Gas is a state of matter. Vapor is not, it is constantly in transition. An easy way to distinguish between vapor and gas is that vapor is something that can be seen or smelled or something that settles down on the ground, while one cannot see a gas but can only smell it. However, there are some exceptions to this classification, for example, water vapor. Water vapor cannot be smelt and it does not settle down on the ground.

High performance liquid chromatography is known as high-pressure liquid chromatography. HPLC is an extremely improved version of chromatography, where the solvent is allowed to drip through the column under gravity.

"Electrofuels Ginkgo BioWorks is engineering an organism for the energy industry in partnership with the DOE that converts electricity and CO2 to liquid transportation fuels. "

Stanford Research International (SRI) claims to have developed a new method for creating liquid transportaion fuels that will result in zero emissions during the manufacturing process and is also less expensive compared to other types of laternative fuels. Too good to be true? Well, this is not only good but also true!

The sight of butterflies flocking onto the heads of yellow-spotted river turtles in the western Amazon rain forest is not uncommon, at least if one is able to sneak up on the skittish reptiles. But the reason why butterflies congregate onto the turtles may be stranger than you think: to drink their tears. The butterflies are likely attracted to the turtles' tears because the liquid drops contain salt, specifically sodium, an important mineral that is scant in the western Amazon, said Phil Torres, a scientist who does much of his research at the Tambopata Research Center in Peru and is associated with Rice University.

There's an old saying that describes the weather in Maine as "9 months of wintah, and 3 months of damn poor sleddin'." But even the hardiest Mainer would be challenged by the climate on Saturn's big moon Titan, where "wintah" lasts 7½ years, temperatures struggle to reach -290°F (-178°C), the ground is rock-hard water ice, and a mix of liquid methane and ethane rains from the sky.

What happens to fat left over from a liposuction procedure? Brad Pitt might choose to turn it in to soap, but scientists at Stanford University have figured out a surprising alternative: stem cells.

SALICYLALDEHYDE is a colorless oily liquid has a bitter almond odor at higher concentration. Salicylaldehyde is a key precursor to a variety chelating agents, some of which are commercially important. Visit Trivedi Science to know more about it and its experiments by Mahendra Trivedi.

Polymer science and polymer engineering are the branches of material science where engineers are working towards developing new materials. Polymer materials refer to solid materials, and it is quite possible to quote various examples of liquid as well as gaseous materials that are beneficial to mankind.

1g solid enzyme powder (or 1mL liquid enzyme), at 40 C, pH 3.0 (disodium hydrogen phosphate - citric acid buffer), hydrolyzes casein and produces 1ug tyrosine within 1 minute, that is, a unit of enzyme activity, expressed as U/g (U/mL).

Alkaline protease was extracted by liquid culture of Bacillus licheniformis NO.2709. This product is an enzyme preparation catalyzing protein hydrolysis under alkaline condition (PH during 9-12). It is suitable for industries such as enzymatic detergent, leather depilation, silk degumming, and protein hydrolysis.

ScienceDaily (June 9, 2011) - Air and water meet over most of Earth's surface, but exactly where one ends and the other begins turns out to be a surprisingly subtle question.

Far fetched but interesting idea. Unlikely we will actually find out in the near term due to conditions in the atmosphere of these planets.

A turbine is a machine used to convert energy generated by moving liquid, gas or air into work. For example, the energy produced by fast flowing water is made to spin a rotating shaft by pushing on the angled blades set around a wheel mounted on the shaft, and this action produces the required work. ...