Common Gases:
* Oxygen (O2): Essential for respiration and combustion.
* Nitrogen (N2): Makes up the majority of the Earth's atmosphere.
* Carbon Dioxide (CO2): A greenhouse gas produced by respiration and burning fossil fuels.
* Argon (Ar): An inert gas used in lighting and welding.
* Helium (He): A light and unreactive gas used in balloons and MRI machines.
* Neon (Ne): A noble gas used in signs and lasers.
* Hydrogen (H2): The lightest and most abundant element in the universe, used as a fuel.
* Chlorine (Cl2): A reactive gas used in water purification and as a bleach.
* Methane (CH4): A greenhouse gas produced by natural gas and livestock.
* Ammonia (NH3): A pungent gas used in fertilizers and cleaning products.
Other Gases:
* Ozone (O3): A protective layer in the Earth's atmosphere.
* Fluorine (F2): A highly reactive gas used in manufacturing.
* Bromine (Br2): A reddish-brown liquid that evaporates easily into a gas.
* Iodine (I2): A solid that sublimates into a purple gas.
* Radon (Rn): A radioactive gas that can be found in homes.
* Krypton (Kr): A noble gas used in lighting and lasers.
* Xenon (Xe): A noble gas used in lighting and lasers.
* Nitrous Oxide (N2O): A greenhouse gas also known as laughing gas.
* Sulfur Dioxide (SO2): A pollutant gas produced by burning fossil fuels.
* Carbon Monoxide (CO): A poisonous gas produced by incomplete combustion.
This is just a small sample of the many gases that exist.