Natural gas consists mostly of methane, which is a compound (CH4), but there are usually a small amount of other gases mixed in (such as butane and propane, and may have water vapor and other gases) when it is piped out of the ground.
These other gases are removed, so then it's just methane gas (a compound).
Before it is piped to your house, trace amounts of an odorant are added, so that you can smell the gas if there is a leak (methane does not have an odor), so that would make it a mixture.
See related link.
Iodine is a chemical element; not a mixture, not a compound.
Sucrose is a compound composed of carbon, hydrogen, and oxygen atoms. It is not an element or a mixture.
Nickel is neither a compound nor a mixture, but a chemical element.
Ar is the chemical symbol for the element argon. It is a noble gas and a pure element, not a compound or mixture.
Calcium Carbonate is a compound and an element. However, it is not a mixture. If it is a compound or a element, then it can not be a mixture
Aluminium is a chemical element because all atoms are identical.
Mixture
electricity is not a compound, mixture or element.
electricity is not a compound, mixture or element.
No, energy is NOT an element, a compound or a mixture.
electricity is not a compound, mixture or element.
It is a mixture.
no they are compound mixture
It is a compound mixture.
Is gasoline a element a mixture or a compound
it is a compound
Is a mixture