Again, (if only to learn something ) put chain on sprocket and try to pull it away.
When you get a new one, take a mental not of what it looks like when you pull on the chain.
With a new chain or piece of chain, test the sprocket, put chain on then try moving it against the teeth, if everything is good it will barely move.
If you get a too long chain and trim it, keep that piece in your tool box to check chains and sprockets.
Up to you now to try lifting chain from sprocket to test it.