even though the universe has got bigger it still has the same amount of atoms in. but when the universe began all the atoms tightly compact together so the universe was smaller
Actually it doesn't. From the first instant of the big bang until one to two billion years later, the universe was too hot to have any atoms, it was nothing but extremely hot individual subatomic particles in a sea of radiation. At the end of this period, the universe became just cold enough that atoms could begin forming (almost entirely hydrogen) and the sea of radiation became free to appear today as the 3K cosmic background radiation (enormously redshifted from its original temperature).
From then on, conservation of mass has kept the number of atoms constant (to within maybe 1% due to stellar nuclear fusion, supernovas, black holes, etc.).
Yes.
Atoms on mars are composed of protons and electrons which are composed of quarks, the same as atoms everywhere in the universe.
no
No, Elements are the same everywhere in the Universe.
They are the same. Iron is a a chemical element. It may be in different states, but iron atoms are the same no matter where in the universe they are. The same applies to any other element.
it is neutral as the protons and the neutrons are the same amount.
There are 2 atoms in a molecule of rust.
The amount of atoms stay the same. The element does not change chemically only physically.
If matter is made up of two or more elements and has the same ratio of atoms no matter the amount of the substance it is a compound.
I am in this universe as the other contains my anti-matter self. If I were to meet my anti-matter self, we would both annihilate immediately. Also the collective atoms that make up myself all originated in this universe. The universe contains the same number of atoms always, at least this one does. So I will be always be here in some form or fashion. Hopefully form!
all elements have the same amount of protons and neutrons. when they are not balanced e.g. there is an extra electron, they are no longer atoms they are ions.
Istopes: Atoms of the same element that have the same number of protons but a different amount of neutrons.