Yes, the compression fittings designed for copper work on both soft and hard copper pipes.
yes
Pipe dope better solution than tape.
Yes they have compression joint fittings for copper.
If you are joining rigid copper pipes together, it is recommended to use soldered copper fittings instead of compression fittings. Soldered fittings provide a more secure and leak-free connection compared to compression fittings, especially under high temperatures and pressure.
It depends on the laws of your state or country. I would say, to be safe, inspect the gas line and install the same type of fittings you find there.
no
Unroll it and use as you would normal hard copper. Compression fittings or soldered fittings.
No. You can use flared fittings with a flaring tool and soft copper pipe.
I believe it has to be flared as compression is not approved
The correct compression fittings.
No. Compression fittings are NOT for steam pipes