Examples of Gaseous State
We explain that what are examples of gaseous state? The gaseous state is one of the states of aggregation of matter . It can occur at almost all temperatures except those closest to absolute zero (0 K), and has characteristics that clearly distinguish it from the solid state and the liquid state. A substance in a gaseous state has a great kinetic energy in all its particles, so they will flutter randomly, colliding with each other and traveling in all directions. examples of gaseous state
Since its atoms or molecules are widely separated from each other, a gas contains little mass in a huge volume. This means that it has a low density . When confined in a container, the gas takes the form of this and already covers a defined space . The weight of a substance in the gaseous state depends on its atomic mass (in the case of noble gases, which are found as single atoms) or its molecular weight (in the case of those with more gases, which appear as diatomic molecules). .Thanks to the separation of their particles, substances in the gaseous state are compressible , that is, pressure can be applied to reduce their volume and make them take up less space . This without losing the physical state. If the mass of the gas inside the container is very small, it will not become a liquid even if its volume is reduced to a millimeter level, because the attractive forces are minimal .All elements and compounds can be present in a gaseous state depending on the conditions in which they are found. Under normal conditions of temperature and pressure (NTP = 20 ° C, 1atm), the substances that are in the gaseous state are: examples of gaseous state
- Noble gases (helium, neon, argon, krypton, xenon, radon)
- Nitrogen
- Oxygen
- Air (nitrogen and oxygen mixture)
- Minor alkanes (methane, ethane, propane, butane)
- Minor alkenes (ethylene, propylene)
- Minor alkynes (acetylene, methylacetylene)
- Minor halogens (fluorine, chlorine)
- Sulfur oxides (SO 2 , SO 3 )
- Nitrogen oxides (NO, NO 2 )
- Carbon oxides (CO, CO 2 )
20 examples of gaseous state
- Superheated water vapor is already in the gaseous state, because all its molecules are sufficiently separated and with high kinetic energy.
- The fuel in a lighter is pressurized to such a level that it appears in a liquid state. However, as soon as its valve is opened, it begins to escape in the form of gas to start the flame with the spark.
- The atmosphere is made up of a variety of substances in the gaseous state, such as nitrogen N 2 , oxygen O 2 , carbon dioxide CO 2 , noble gases, methane CH 4 .
- The exhaust from a running car gives off combustion gases, such as carbon dioxide CO 2 , carbon monoxide CO, and water vapor H 2
- The natural gas used to light stoves is mainly made up of CH 4 methane , the simplest alkane, comprising 97%.
- When sodium bicarbonate NaHCO 3 and water H 2 O are mixed , a chemical reaction occurs in which carbon dioxide gas CO 2 is released in the form of bubbles; this phenomenon is called effervescence.
- Freon gas is a chlorofluorocarbon compound that is used in refrigerators as a cooling agent. It is compressed enough, then it is circulated through a pipe and there it takes in the heat of the food. Return to the compressor and continue the cycle.
- Freon gas is also used in air conditioners, to cool the air that comes from outside and send it fresh to the interiors of a car or home.
- Aerosols are made up of several liquid or solid substances suspended in a gas that works as a diluent.
- Mercury in gaseous form is the component that emits black light from ultraviolet lamps.
- Argon gas, being inert, is added in the beverage packaging process. Thus, it replaces oxygen and prevents the drink from spoiling so quickly.
- Chlorine gas is injected into treated water streams during tertiary treatment or disinfection, to eliminate microorganisms and odors and make it drinkable.
- Helium is a noble gas, the second lightest gas after hydrogen. It is odorless, colorless and tasteless and is used to inflate metallic party balloons.
- Hydrogen is the lightest gas, and its potential as a clean fuel has recently been discovered and applied, emitting not only heat, but also water vapor, without contaminants.
- Krypton is a noble gas that is used to make fluorescent lamps and has an important role in the laboratory.
- Neon is one of the lightest noble gases, and its main use is to fill fluorescent lamps.
- Oxygen is one of the most important gases in the atmosphere. Respiration is responsible for providing us with it, finally participating in the body’s processes at the cellular level. It is highly flammable in its pure state, so it is buffered by nitrogen in the atmosphere.
- Acetylene C 2 H 2 gas is one of the most accessible and manageable fuels. It is very light and is used in welding to melt steel.
- Propane C 3 H 8 is, together with butane C 4 H 10, a component of LP Gas or liquefied petroleum gas, which is used as a high calorific fuel both in industry and at the domestic level.
- Xenon is a noble gas that is used in the creation of high-beam headlights for automobiles.
