Are these similes or metaphors
1. the road was a curvy as snake.
2.my mom told me that my room is like a pigsty.
3. mike is like a scared kitten as he enters the haunted house.

Just so you know...

A simile is comparing something with something else using 'like' or 'as' (for example - I swam in the sea like a fish or my room is like a tip). 

A metaphor is a word or phrase that compares something with something else (for example - his heart is metal or my room is a tip). Hope this makes sense!

1. The road was as curvy as a snake - Simile 

2. My mum told me that my room is like a pigsty - Simile

3. Mike is like a scared kitten as he enters the haunted house - Simile

Hope I helped!