If you have an infinite ammount of something and you take something from it, is it still infitinite ?

Yes...the easiest way to attempt to visualise this is to imagine an infinite series of numbers. Now remove all the odd numbers (there's an infinite amount of them)...you still are left with an infinite amount of even numbers.

The trouble with this is that our universe does not have an infinite amount of anything. Yes, it has lots and lots of stuff, but there is no way for our brains to truely visualize an infinite amount of anything.

That being said, In mathematics, if you have an infinite number and you subtract any finite number the answer is still infinite.

If I have an infinite amount of something, and I take some of it, then I have what I took in addition to the infinite amount of something that I had before, so I have an infinite amount plus some more.

I wonder where I keep it all?

Yes

Infinite - n = Infinite

Infinite+n=Infinite

Infinite/n = Infinite

Infinte*n=Infinite

Anything that is infinite cannot be separated...Time can only be measured, space can only be lived in and I would like to see you take something from God.

Yes, for example on a graph of a line that goes forever, the line even if you take a chuck still goes on forever. It may stop where you take the chuck but the rest will still go on forever.

all matter is infinite you can separate it or change its properties but it will still be there in some form.

yeah, because infinite means never ending and if you take something away, it'll still get it back because it's never ending.

yes

Yes, because infinity isn't a number, it's a concept.