The Dictionary definition of an amide is
an organic compound obtained by replacing the −OH group in acids by the −NH 2 group.
So from this, I deduced that the bond would be CONH2.
But when I searched around, I found some images that showed the bond only had one hydrogen atom, like so:
Which is the correct bond structure? I'm looking specifically at the condensation polymerization of diamine and diacarboxylic acid to form nylon.
And also, I see online that lots of bond structures (like NH2 and COOH) are prefixed with a dash, so they'd appear like -NH2 and -COOH. Is this just a personal preference, or is there a more elaborate reason behind this?
I'm currently doing the GCSEs.