Liquefied gases are gases that have been cooled or pressurized to become liquids. This process allows them to be stored and transported more easily. Common examples include liquefied natural gas (LNG) and liquefied petroleum gas (LPG), which are used for heating, cooking, and as fuel for vehicles. When these gases are released from their liquid state, they quickly return to gas form. This property makes them useful in various applications, including industrial processes and refrigeration. Proper handling and storage are essential to ensure safety, as liquefied gases can be flammable or hazardous.