How do we know that we are made of matter and not anti-matter?

Answer 1

What is matter and what is antimatter is irrelavent.

All that counts is that one is the opposit eof the other.

Answer 2

Actually this is a question that someone like you shouldn't ask.

what we can only say is anti-matter is something which has characteristics which are completely opposite to the characteristics of what we call matter so one intelligent species can call the first one matter while some other intelligent species calls it anti-matter.

Actually we still don't know this thing which 's called anti-matter exists. We've only assumed there's something opposite to matter, inspired by what we can do with it.

It's Important that we should understand that there could be something which has semi characteristics too.

Answer 3

Anti-matter is not wieghtlessness. In fact, if anti-matter is seperated from matter, it behaves just like matter. In fact, it is possible that different parts of our universe are made entirely out of what we call anti-matter. But, we cannot tell from observation since matter and anti-matter act entirely the same unless brought together.

But the answer is that the terms matter and anti-matter are just definitions that we have given to the types of particles we see.

In our definition we are made of matter, although there could be another planet out there whose inhabitants are made of our antimatter and we are made of their antimatter.

In short: It is simply a matter of semantics.

Answer 4

If you want you can say we're made out of antimatter and the wierd stuff that scientists make in labs is matter.

There is actually an unambiguous definition of matter that comes from weak interactions which violate charge/parity symmetries. So it is possible to make a definition that you could explain to someone in an anti-matter universe that would tell them that you are made of different stuff than they are. It has to do with the stuff produced in the decay of the long-lived K meson (which is it's own anti-particle, so it shouldn't have a preference to decay into matter or anti-matter, but it does).

Edit: There is a companion riddle that goes hand in hand with the one of defining anti-matter and matter, which is how do you explain to somebody what is the difference between right-handed and left-handed. Once you can define matter, you can easily define handedness and vice-versa.

Answer 5

It doesn't matter if we're made of matter or anti-matter. The main thing is that one is the 'opposite' of the other, and when they meet they annihilate to form energy (in the form of EM radiation).

It made more sense to think of us and everything around us as 'normal' matter and call the 'newly' discovered matter 'anti-matter'.

Answer 6

Matter is referred to the common place particles around us. Anti-matter is the same size and mass particles with an opposite polarity.. Now consider this we are here is it possible for there to be a whole other galaxy and twin of yourself made of anti-matter. OF COURSE!
However please don't invite him over anytime soon. You are more then welcome to go to his place thou.

BOOM!!!!!!!!!!!!!!!!!!!!!!

Answer 7

Because if we did then matter would be antimatter and antimatter would be mater, its a matter of perception!

Just like we see the bizarro world as bizarro, the people from the bizarro world sees our world as the bizarro world!

Answer 8

This one is simple. In our universe, it is matter, but in another our matter is antimatter and their's is matter.

Answer 9

anti matter is weightless. we are not weightless so we must be made up of matter.

Answer 10

antimatter is the opposite of what we are made of
so if antimatter is the opposite of what we are made of, then we can't be made of antimatter