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.

Answer :

Just so you know...

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). 

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!