No.Sometimes farts are just gas so they do not always smell.
no all gases do not smell. if you think about oxygen can you smell it?
yes they do smell but it depens on what you eat if u eat like a fruit and you burp it wont smell,if u eat a hamburger it will smell
i think most gases cannot be seen by the naked eye. but some gases are not seen heard smelled or known it is even there. those ones are toxic
Many gases are colorless; examples are oxygen and nitrogen. Others have a visible color; example chlorine (a greenish-yellow tint.)
YES
Usually it seems that they are. Some really are. Others are just not presented in a way that makes them visible. In short, some gases are visible and have colors. Check the link.
One of the best-known visible gases would be Chlorine. Chlorine shows as a putrid green-yellow cloud, and is incredibly toxic to humans.
they all contract.
halogens are much more reactive
yes they do
Excepting some colorless gases all chemical elements are visible.
Usually it seems that they are. Some really are. Others are just not presented in a way that makes them visible. In short, some gases are visible and have colors. Check the link.
invisible
One of the best-known visible gases would be Chlorine. Chlorine shows as a putrid green-yellow cloud, and is incredibly toxic to humans.
the visible surface of the sun
The gasses that make up the sun's corona.
The corona.
It's mostly to do with density. In simple terms, gases have very low densities compared to solids and liquids, so that their molecules/atoms cause very little scatting of light as it passes through them.
They are all visible to SOMEBODY.
all of them are because they are all gases
No. they are not all gases. e.g. sulphur
Comets are frozen collections of ice,dust and gases which moves around the Sun.