Yes - even to a liquid. A solid is also possible but is not practical on Earth.
Compressed oxygen--oxygen that is stored as a gas in a tank.
Gas can be compressed easily.
Yes as the oxygen (gas) can be compressed into the very small container which is a property.
Astronauts use compressed oxygen mixed with nitrogen fo produce their breathing gas.
All gases are compressible. Depending on their state. Oxygen can be a gas, a solid or a liquid. Liquid oygen (very very cold) would not be compressible, solid oxygen (frozen) would not either but as a gas at standard conditions - room temperature and pressure - it can be compressed. For example, compressed oxygen is used in emergency vehicles to keep people alive if they are injured or sick. It is extremely flammable, almost explosive so no smoking near a compressed oxygen gas cylinder, OK?
actually compressed oxygen does actually have weight.
CNG is compressed natural gas
Because nitrogen will block oxygen and prevent combustion.
No one cares you nerd
Yes, but it is a mechanical explosion and not a chemical one. The pressure of the gas cause the gas to store mechanical energy. And if circumstances permit, like a weakening to failure of a compressed gas cylinder with high pressure nitrogen in it, there will be a mechanical explosion. Such things have been known to occur - with catastrophic results. Nitrogen will not burn in the conventional sense, so it won't explode like, say, hydrogen.
gas can be compressed easier.
By condensation