No they did not their ancient ancestors did
They painted on cave walls.
Yes.
yes
The Neanderthals made the paint out of red, orange, and black powder probably mixed with animal blood and fat.
Paint on cave walls.
Paint on cave walls.
anything you want
You can't get writing in the middle of a rock. The only way to write something in a rock would be to drill or carve it, or carve it and fill with ink or paint.
I don't think anyone knows.From their scanty fossil records they were probably as intelligent and emotional as their parallel species Homo Sapiensis -but they left no evidence of any art of craftwork they might have created.
This is a tricky one to answer it depends on what you class as 'artist',after all the Neanderthals would paint scenes in caves it was classed as art so therefore the first artists would be Neanderthals.
The Neanderthals, of course. Cro-Magnon couldn't paint to save his life.
Cro-Magnon were known to paint on cave walls.