A large helium-filled balloon is being used to lift scientific equipment to a higher altitude.

Example of gas molecules. There are many examples of gases in our environment. Depending on the element when the temperature or pressure is raised or lowered then they will shift into another state. What is an example of gas diffusion.

The related process effusion is the escape of gaseous molecules through a small usually microscopic hole such as a hole in a balloon into an evacuated space. The following list has substances known to be gases but with an unknown. A noble gas like neon elemental molecules made from one type of atom eg.

See this in action through examples. C After a short time both the slower-moving O 2 molecules and the faster-moving H 2 molecules have distributed themselves evenly on both sides of the vessel. H 2 O water N 2 nitrogen O 3 ozone.

Whether or not a substance is a gas depends on its temperature and pressure. The lighter gas H 2 passes through the opening faster than O 2 so just after the stopcock is opened more H 2 molecules move to the O 2 side than O 2 molecules move to the H 2 side. The water molecule is H 2 0.

This could be another atom of itself in the case of the oxygen gas humans breathe O 2 or it could be bonding with another atom as in when two hydrogen atoms chemically bond with oxygen to make water H 2 O. Generally a covalent bond and its content is widely present in nature. A pure gas may be made up of individual atoms eg.

At sea level the temperature is 20 C and at the higher altitude the temperature is -40 C. There are two kinds of diatomic gases such as Nitrogen N 2 Oxygen O 2 Hydrogen H 2 etc. A gas mixture such as air contains a variety of pure gases.