Metals - to be, or not to be, that is the question.

I was wondering. Science teachers always say that metals come as elements. So when you mix a few metals, making a mixture, a mixture, mind you, not a compound, is it a metal or not?
Science is so crazy. Math teachers bring up neucleii, and at the end, it turns out that they weren't talking about the neucleii in cells at all - they were talking about atoms! You may think that that makes math crazy, but no, it is the Science in the math Class that is annoying, is it not?
And what about combining two metals to form a compound? When I asked a science teacher she told me that it is not possible to combine two metals. What kind of reasoning is that? The only thing I can make out of it is that science is being as pig-headed and stubborn as possible.
So the only thing that one should take away from this is that science is CRAZY, and always will be.