Gases are made up of molecules that move arbitrarily and chaotically, colliding with each other and everything else around them. The gases fill every available volume and, due to their extremely fast movement, swiftly mix into every atmosphere they are liberated from. Different - types of gases that exist in everyday life. A variety of gases, including oxygen and nitrogen, are present in the air for breathing
COMPOSITION OF GASES IN THE AIR
It turns out that nitrogen is the gas most contained in the air with 78.084% of the volume of the air, while oxygen is only 20.9476%. Nitrogen (N2) is a colorless, odorless and tasteless gas. Nitrogen forms gas molecules that are stable, non-reactive, and non-flammable.
THERE ARE 3 GASES THAT ARE CLASSIFIED AS DANGEROUS
1. Flammable
Combustion is a fairly simple chemical reaction in which oxygen is rapidly combined with another substance to produce energy. This energy appears primarily as heat sometimes in the form of fire. The igniting substance is usually not always a hydrocarbon compound and can be solid, liquid, vapor or gas. However, only gases and vapors are included in this combustion process.
2. Toxic
Some gases are toxic and can be dangerous to life at very low concentrations. Some toxic gases have a pungent odor such as the typical 'rotten egg' smell of Hydrogen Sulfide (H2S). The most commonly used measurements for toxic gas concentrations are parts per million (ppm) and parts per billion (ppb). For example 1ppm would be equal to a room filled with a total of 1 million balls and 1 of them is red. The red ball would represent 1ppm. Risks from poisoning. For example; Carbon monoxide, Hydrogen, Chlorine.
3. ASPHYXIANT
We all need to breathe Oxygen (O2) in the air to live. Air is made up of several different gases including Oxygen. Normal ambient air contains Oxygen concentration of 20.9% v/v. When the Oxygen level drops below 19.5% v/v, it is considered oxygen deficient air. Oxygen concentrations below 16% v/v are considered unsafe for humans.