A bit different than you might think. Our Earth consists of abnormal matter, as do the other planets.
If normal is the common state of matter, then that would have to be the interior of stars. For our Sun contains over 99% of the matter in our solar system. And the other stars will be similar we believe.
And the interior of the Sun is thought to be in excess of 13 000 000oK, decreasing to 5800oK at the surface. The interior is fusion temperatures, and most of the Hydrogen there will be ionized. So single atoms will be the norm.
[You'd have to have a very long thermometer to measure millions of degrees, and maybe that would keep you from getting too close?]
But here on Earth, most matter exists in the form of a molecule.
So on Earth (which is possibly what you wanted) most matter exists as compounds and mixtures, even in the interior of the Earth.
BUT the above ignores the noble gasses which have their outer electron shell filled, and thus are pretty non-reactive. [Though with sufficient brutality, some compounds may be formed.]
He(lium), Ar(gon), Kr(ypton), Ne(on), Xe(non), R(ado)n. There may be a couple of trans-uranic chaps as well, but we'll ignore them.
I ignore 'dark matter' for we know little about it apart from some of its inferred properties.
Most single atoms are unstable and must undergo a chemical reaction in order to become stable. The noble gases, however, can exist as single atoms, because they have filled valence shells and are therefore stable on their own.
substance
Atoms exist throughout the universe. the most common atom in the universe is hydrogen. Helium is the second most common found in the universe, and oxygen is the third.
Atoms of most elements are not able to exist independently. Atoms form molecules or ions aggregate in large numbers to form the matter that we can see. Molecule is capable of independent existence.
Neutrons and protons.
Atoms could be identified by various technique. Single crystal X-ray diffraction is the most important in that.
Most single atoms are unstable and must undergo a chemical reaction in order to become stable. The noble gases, however, can exist as single atoms, because they have filled valence shells and are therefore stable on their own.
Most matter doesn't exist as individual atoms. Inert or "noble" gasses like helium and argon excepted, most matter exists in molecules that are composed of two or more atoms. Even pure oxygen isn't individual atoms; oxygen is the O2 molecule composed of TWO oxygen atoms. Except within the cores of stars, hydrogen, the most common element, normally exists as the H2 hydrogen molecule. So in general, matter is composed of molecules, which are composed of atoms.
substance
Atoms exist throughout the universe. the most common atom in the universe is hydrogen. Helium is the second most common found in the universe, and oxygen is the third.
The most basic unit of chemical matter is the atom. Everything that is liquid, solid or gas is made up of atoms. Atoms are very very small, it single strand of human hair is approximately one million atoms wide.
Atoms of most elements are not able to exist independently. Atoms form molecules or ions aggregate in large numbers to form the matter that we can see. Molecule is capable of independent existence.
Presumably that refers to matter that is made up of atoms. Most matter in your everyday life is made up of atoms, but in our Universe, there is about 5 times as much matter that is NOT made up of atoms - the so-called dark matter.
atoms atoms
most matter that exists in the universe is in the plasma state
Solid !
Yes. Most hydrogen atoms do not contain neutrons. All other atoms do.