why does the atoms of an object not mix with hte atoms of other objects surrounding it? for exmple, what keeps my atoms apart from my clothes' atoms?
206510
The electrons in you repel the electrons in your clothes, and in everything else.
405888
I already answered your previous question :-)\n\nBTW, it is balanced because the number of atoms of each element is equla on both sides.
410175
Let's see, this may be a bit difficult to explain, but since no one else has so far, I figured I'd give it a shot.\n\nI don't have a periodic table in front of me, so I'll do my best to explain.  There is a double bond between N and one of the O's because of something called "in-bonds."  You determine the number of "in-bonds," or bonds in between elements by subtracting the number of valence electrons that you have all together from the number that you need for everything to be stable.  In this case, forget about H for the time being, and you have N03.  Each element needs 8 electrons to fill its valence shell right?  Multiply 8 by 4, since there are 4 elements, and you get 32.  However, you only have 24 electrons to go 'round.  The difference is 8, there for you can have a total of 8 electrons, or 4 individual bonds in between the elements.  It doesn't matter which O gets to share the double bond with N, as they are all the same.\n\nThe double bond was used in HNO3 and not NF3 because I believe you had enough electrons to go around, therefore there were no "in-bonds."\n\nI hope this helps to clear up your questions.
643525
OK.  There was a discrepancy in the atomic mass of elements.  We have electrons, which have insignificant mass, and an equal number of protons (to make the atom neutral), but the atomic mass exceeds the sum of the masses of the protons + electrons.  So we hypothesize that there is another particle in the atom which has atomic mass roughly the same as a proton but no charge.\nIt makes sense that this particle is in the nucleus.\nBUT, we can't use magnetic properties to isolate this particle.  And an atom is pretty much indivisible.  So we must actually strip off the electrons AND the protons to isolate neutrons.  That's not easy.
506214
1a.) So you do not end up with more of one element than you started out with, elements cannot be created or destroyed in chemical reactions\n1b.) in a physical change, the elements do not combine with other elements- it remains the same substance (i.e. cutting paper or melting ice) a chemical change happens when chemical properties are changed, and new substances are formed (i.e. burning, baking soda and vinegar)\n2.) organic compounds an be found in living things, soil, or near anywhere living organisms are.\n3.) Carbon, Hydrogen
255915
From elementary chemistry it is known that the atomic structure of any element is made up of a positively charged nucleus surrounded by electrons revolving around it. An element’s atomic number indicates the number of positively charged protons in the nucleus. The atomic weight of an atom indicates how many protons and neutrons in the nucleus. To determine the number of neutrons in an atom, the atomic number is simply subtracted from the atomic weight.\n\nAtoms like to have a balanced electrical charge. Therefore, they usually have negatively charged electrons surrounding the nucleus in numbers equal to the number of protons. It is also known that electrons are present with different energies and it is convenient to consider these electrons surrounding the nucleus in energy “shells.” For example, magnesium, with an atomic number of 12, has two electrons in the inner shell, eight in the second shell and two in the outer shell.\n\nAll chemical bonds involve electrons. Atoms will stay close together if they have a shared interest in one or more electrons. Atoms are at their most stable when they have no partially-filled electron shells. If an atom has only a few electrons in a shell, it will tend to lose them to empty the shell. These elements are metals. When metal atoms bond, a metallic bond occurs. When an atom has a nearly full electron shell, it will try to find electrons from another atom so that it can fill its outer shell. These elements are usually described as nonmetals. The bond between two nonmetal atoms is usually a covalent bond. Where metal and nonmetal atom come together an ionic bond occurs.\n\nhttp://www.tech.farmingdale.edu/depts/met/met205/atomicbonds.html\n\nhttp://web.jjay.cuny.edu/~acarpi/NSC/5-bonds.htm
386090
what is the atom made of and explain how they work?
535817
The tip I give to my student is to always FINISH with the element that has only one type of atom, like O2 or H2.  This way, when you balance it, you won't disturb any work done previously.
147468
As above, chemical bonds hold atoms together, making molecules.  Molecules make up the vast majority of the stuff everything is made of.  Knowing all we can know about chemical bonds enables us to break existing bonds and make new ones.  That's how we make different kinds of things (from new drugs to artificial diamonds).  It's what makes chemistry soooo cool.  \n\nThere are 4 kinds of bonds (covalent, ionic, metallic, and hydrogen), but I've never heard of 4 kinds of hydrogen bonds.  Hydrogen bonds, strictly speaking, are different from the other three and are the attractive force between a polar hydrogen atom in one molecue and an exposed, unshared pair of electrons on another atom (like oxygen or nitrogen) on another molecule.
656948
It is not due to the chemistry of copper or gold.\n\nIt is due to the electronic band structure. The two metals unusually have a band structure that causes them to absorb light at certain frequencies rather than reflecting it.
229603
Do you really need help with this or are you just testing our knowledge? It's been years since I've done this, but I think it has something to do with the atomic mass/number.
452118
You should recognize that, when they combine with nonmetals, metals tend to LOSE electrons and form POSITIVE ions. Nonmetals, on the other hand, tend to GAIN electrons and form NEGATIVE ions.\n\nGet an "A".
202177
Depends how detailed you go, they have paired atoms where you do one thing to one and it happens to the other, if things were the same down to this level maybe they'd be joined in the same way. Just a thought.
207853
An atom has a closely packed nucleus and orbitals that extend far outward filled with electrons. The entire set is an atom, when you get down to the subatomic level, there is a lot of empty space, similar to how our solar system has massive central star with comparatively miniscule planets around it. Without the empty space though, we'd be incinerated by the sun. The same way an atom has space between the neucleus and the orbitals. The entire atom, extra space and all, still exists.
661018
Don't know who told you that "atoms only consist of energy", but in general, that's nonsense. Atoms consist of electrons and the nucleus (protons and neutrons, which again are made up from quarks), and these particles have a well defined rest mass. Einsteins theory of relativity is well proved and gives us the famous equation E=mc^2 for the energy equivalence of a rest mass, *which does not mean that energy and mass are the same*. It just means that you can transform energy and mass into each other and are equivalent in a certain (relativistic) way.\n\nSo if you want to make a fool out of yourself: Go ahead and try to disproof Einstein, like thousands of fools have tried before. If you're really interested in physics, go and get some good books about the basics, and you're welcome to come back with some more serious questions.
555418
In Greek atomic theory, the atom was considered the smallest, indivisible, particle of matter.\nThey view atoms as the basic building block of everything else, and all atoms were identical, different combinations of how they were put together determined the properties of the substance.\n\nOf course, we now know that atoms themselves are made up of smaller, sub-atomic, particles, which are then intern made up of even smaller particles.  Atoms are the smallest particles of a given element which will exibit the properties of that element.  Different elements, and thus different types of atoms, exist.  So the Greeks were not correct in that respect.
458866
A simple way to do this is to look at an atom (carbon for instance) and look at the number of atoms around it. It doesn't matter if it is a single bond, double bond, etc..they all count the same. For instance in the molecule CH4, the carbon atom is sp3 hybridized. For something like CH3(-), it would be sp2 hybridized. For CH2(2-) it would be sp hybridized on the carbon atom. \n\nThe hybridization of orbitals comes from the "mixing" of the character of different orbitals such as the  s, p, and d orbitals. This of course isn't completely true, but it serves as a useful rule to determine the shape and interaction of overlapping orbitals in a molecule with surrounding atoms.