In order to connect a chromed steel pipe to a copper pipe, you will need a brass fitting. These two pipes will not fit into each other otherwise.
Sweat a female fitting on the copper or use a compression coupling between the two.
Sure why not
A flare less fitting used to connect tubing or hose.
A tube connector is the standard fitting that goes on a tube or hose. A tube adapter fits to a tube or hose and enables it to connect to a fitting of a different size to its standard.
There are copper fittings that will connect to galvanized.
You can't. There is no fitting to do this. Galvanized has to be threaded.
That you can directly get from the optician..
Yes, with an approved adapter fitting.
Yes
adaptor - a fitting used to connect different pipes
Dielectric union
A hose nipple is a push-on fitting that allows you to connect the hose to a threaded fitting. See related link below for a picture of a hose nipple.