Is a snake an invertebrates

Yes, snakes are vertebrates. A vertebrate is an animal with a backbone and internal skeleton. A snake is basically one long backbone with a head. It has little else in it's body. Therefore, it is a vertebrate. They are classified in the Subphylum Vertebrata. See the related link for more information.

A snake belongs to class Reptilia.
Its a vertebrate, as it has vertebra, or a spine.
They are Reptiles. All Reptiles are Vertabrates.
Snakes have a spine so they are vertebrates.
Vertebrates are animals with backbone and internal skeleton.

A snake is basically one great backbone with a head - little else, but fine ribs.

Therefore, it is certainly "vertebrate".

They are classified in the Subphylum Vertebrata. See the related link for more information.
Yes, amazingly a snake's only bone is the backbone and a rib cage. I found this out do to a researcher.
vertebrae