1. Molecules: All gases are made up of molecules, which are the smallest unit of a chemical compound that can exist. These molecules can be simple (like nitrogen gas, N2) or complex (like hydrocarbons found in natural gas).
2. Impurities: Depending on the source and processing of the gas, it can contain impurities. These might include other gases, dust, or even small amounts of liquids.
3. Energy: Gases contain thermal energy, which is related to the movement of the molecules. This energy can be harnessed to do work, as seen in engines or power plants.
Let me know if you'd like to explore any of these in more detail or have other questions about gas!
