how come if you put two exactly the same solids next to each other they won’t bond?

Question

Like if you had a gold bar and placed them next to each other. They’re the same atom? I have a basic understanding in chem but still so much confused me

In: 4

Answer 1

So under the proper conditions they do! It’s called vacuum welding, or space welding. Two identical metals with no oxide layer brought together in a vacuum will spontaneously fuse together. It’s super cool!