by compressing it
because that's what it is?Liquefied Petroleum Gas = LPG
LPG: Liquefied Petroleum Gas CNG: Compressed Natural Gas
gas
NGL is not liquefied natural gas, which is condensed natural gas that is compact and therefore convenient for overseas shipping.
Helium.
You cool it down.
Yes.
That the gas has liquefied.
Carbon dioxide (CO2) can be liquefied under pressure at ordinary temperature.
lpg
sometimes
Yes, it becomes liquefied natural gas (LNG) and is frequently transported by tanker trucks in this form.