My mom and I are always arguing and fighting. I hate it. What can I do to stop it?

Whenever my mom asks me to do anything, like clean my room, I snap at her rudely without thinking about it. I quickly apoligize, but by then it is too late. She is already angry. Then she gets unfair. She starts grounding me if I disagree with her a little bit, and when I try to talk things out, something goes wrong and we both end up yelling at each other.