3 little questions regarding margin trading with leverage

Hello friends, right now I’m trying to understand trading with leverage. Am I right with the following regarding trading with leverage:

  1. Lets assume Im using 10.000 Dollars with leverage 10x. Then if the price moves 1%, my profit is 10% of 10.000 = 1000 Dollars?

  2. What does it have to do with the margin? What is it? I was reading about this but can u explain in your own words please?

  3. How do I calculate my liquidation price on which I loose all my money?

Kind regards