Gas is only visible by having a certain color: Chlorine: greenish yellow, Iodine: purple, Bromine: redish brown. No color, not visible.
The visible beam of headlights in fog is caused by the Tyndall effect . The water droplets scatter the light, making the headlight beams visible.
It depends on what gas you are talking about.
Chlorine gas is green. If you heat iodine to make iodine gas it is a beautiful purple. Gasses of several compounds are also visible.
Dimples are visible indentations of the skin, caused by underlying flesh, which form on some people's cheeks when they smile.
oxygen i s colorless gas because it does not appear in the visible region of uv visible spectroscopy
Condensation
CO is a gas. It has no color
Because some dumb guy farted and sent a gas rocket that caused the coal to crash down.
Many of the gas giants of our system, as well as some moons (thought they are not planets, some are just as big)
I think you are looking for the Photosphere. That is the part of a star that emits visible light.
gas cap loose..
Of course they do. Some examples are fizzing, when a gas is produced, colour changes, and the formation of precipitates.