Average density of the planet
Gaseous exchange is a natural process, ventilation is a forced process.
yes
I don't knw!:(
Any chemical difference exist.
Vaporization is the conversion of a solid or liquid into a gaseous state. Evaporation is a type of vaporization, where liquid is converted to a gaseous state where the environment is not saturated.
Xenon is a gaseous element, Xenophon was a Greek historian - a pupil of Socrates.
Phase has nothing to do with chemical composition.
Iodine molecule has covalent bonds.
Yes it can, the only difference between liquid and gaseous water is it's physical form, not it's chemical composition.
White light is a mixture of colours, light from gaseous elements is of one colour, sometimes of just one wavelength (frequency)
Uranus is the greenish blue planet and it is gaseous.
Smoke is a byproduct of incomplete combustion. Fumes are the gaseous form of a substance that is solid at room temperature.