How many atoms exist in the universe ?
485170
This question is miscategorized.\n\nSpecial Education refers to the education and parenting of children with special needs.\n\nThat being said, an infinite number of lesser volume that the greater infinite volume of space.
435134
So, I don't think we have the technology to actually know if two atoms are identical.  Right now, we just think they are based on various observations.  It could turn out that each atom is actually a mini solar system like you suggested or it could turn out to be just identical atoms.  Science is just a series of guesses based on our current observations.  It changes all the time.
840490
One way to count atoms is by using the molar unit.\nSince different atoms have different weights (masses) the molar quantity of different elements will have different weights.  However, the molar quantity will have the same number of atoms - 6∙02 x 10^23.  This number value is known as Avogadro Constant.\n\nExamples:\n Hydrogen: 1 mole = 1g and contains 6∙02 x 10^23 atoms.\n Oxygen : 1 mole = 16g and contains 6∙02 x 10^23 atoms.\n Water :  1 mole = 18g and contains 6∙02 x 10^23 molecules.
72779
A molecule is made up of atoms.
14668
There is not an equal amount, despite what the first responder said. The question of why there is so little antimatter is a key problem for cosmologists today. There is, as yet, no completely satisfactory solution to the problem. The weak nuclear force clearly affects antimatter differently than matter, in a way that has caused the symmetry to fail. This only accounts of a miniscule fraction of the extra matter in the universe.
253918
Molecules are made of atoms
756517
Atoms have mass which can sometimes have volume and there are about 6.022x10^23 particles in a mole of an element. A mole of an element is the atomic mass in grams. Now, you can use all this and do some further research on the Internet and in books to write a nonfiction book on atoms and how the periodic table of the elements is set up.
819588
number of atoms (of each element) on one side equals the other side.
1116812
The paper cited below says "It is the rarest element with an amount of only 550 g. in the entire earth's crust,"\n\nThat's a little more than 18 atoms.
1169808
The periodic table is organized by a few things, but most noticably is the amount of protons located in the nucleus of an atom.\n\n1 Hydrogen, 2 Helium, 3 Lithium, 4 Beryllium, 5 Boron etc\n\nYour question cannot be answered unless we found that there was a limit to the number of protons allowed to be in the nucleus.  As of right now, there is no pursuading evidence that there couldn't be an element with 603 protons, 2005 protons etc...\n\nSo we must admit that there could be an infinite amout of elements (though in the real world there isn't anything that is "Infinite") so theoretically we know 111 elements out of infinity. \nWhich is 0%.
1151663
Universe in not infinite. It is finite and constantly expanding. Yes there are more galaxies than no. of grains of sands in all beaches of the world. This universe is unimaginably huge!
232753
An atom is the smallest divisible partical that can exist on its own. Its divisibble because it contains three subatomical particals known as protons, neurons, and electrons while an element is a substance that cannot be split into two or more substance like the periodic table has a list of different elements, so examples of elements are those on the periodic table and atoms make up matter.
980485
The number of atoms in the universe is not decreasing...\nThey are spreading out as the Universe expands...
621991
I dont have an actual numerical percentage for you, but yes, matter is mostly made up of just empty space.\nThere not only is lots of empty space in between atoms, but also, the atom itself is mostly empty space as well.\nWhen you scale an atom into normal terms, the VAST majority of its mass is concentrated in an extremely mall area (the nucleus) and its electrons orbit very far away (in relative terms).
1039705
The cell is still made up of many atoms, thats the only irrefutable link there. And the atom is not the elementary essential of matter, if by elementary essential you are referring to the smallest constituent of a matter. Atom is made of of sub-particles: protons, electrons, neutrons, quarks... And these are further made up of smaller sub-particles (our knowledge are always limited). Proton and nuetron have masses and volumes. Doesnt that mean they are matter too?
861436
The universe consits mostly of dark energy (95 percent) with about 25 percent of that being dark matter. Then, about 4 percent is free hydrogen and helium. Stars, about .5 percent, neutrinos, .3 percent and heavy elements (metals, iron etc.) about .003 percent. Further more, the density of the universe has been calculated to about one hydrogen atom for every cubic meter of space. So as you can see the matter that is visible, makes up a very miniscule amount of the universe.
172739
The atomic number is representative of the number of protons in the nucleus.  The atomic mass is representative of the number of total particles in the nucleus, which is made up solely of protons and neutrons.  That means that (35 total particles)-(17 protons)=18 neutrons.