We use gases every day in our lives. The gases that we use are air, natural gas, oxygen, carbon dioxide, nitrogen, and water vapor.
Diffusion.
Gases are useful for lots of things. you might need to specify on what gas it is?
Greenhouse gases have many positive effects. Some of these are limiting the need for fossil fuels, making previously uninhabitable and unusable farmland useful, and increasing the yeild of certain crops.
Gases are compressible.
so that you are able to breath
because they really wanted too
Methane can be used to create energy
Refrigerators, combustion engines, air cannons, SCUBA and submarines.
Some examples of useful mixtures include air (a mixture of gases), soil (a mixture of organic matter and minerals), and alloys (mixtures of metals). These mixtures have unique properties that make them valuable in various applications ranging from construction to manufacturing.
Gases are compressible.
Interesting and very difficult to put into x amount of letters.
A gas syringe would be useful for collecting 50cm3 of gas as it allows for accurate measurement and collection of gases in a controlled manner.