Atoms Definition and 853 Threads

Because the charges on the electron and proton have the same absolute value, atoms are electrically neutral. Suppose this were not exactly true, and the absolute charge of the electron were less than the charge of the proton by (1.50e-5)e. now its a 4 part question, i think i can do the...

Is it known what's between atoms, or between the nuclei of atoms and their electrons? There's a great deal of space (relative to the size of the particles) between the electrons of an atom and it's nuclei, so are there some particles in those spaces, or is it essentially a vacuum? Thanks...

Where do atoms go after they have been destroyed for use of the atom bomb, or anything else that destroys atoms. Does the things that make up an atom disaper or form another atom. thanks, quantumgenius

I have a question ... if atoms cannot be compacted, beyond a certain minute level, how could they exist inside a black hole, and particularly at the 'singularity' point? Does the fact, that atoms cannot be compressed beyond a certain point, suggest falsification of the hypothetical singularity...

I have no idea how to do this...any ideas?

Guess I'll be flippin' burgers for the rest of my life guys... I can't figure out the difference between elements and atoms! I've searched the internet and wrote down their definitions and I e-mailed my prof. Here is how he explained it: > Atoms are the fundamental building blocks of matter...

[SOLVED] Hybrid Atoms I should like to know your opinion about the possibility of the existence of atoms whose nuclii are composed of matter and antimatter components (simultaneously). Which and where experiences had been made about it. Thank you.

What is the mass (in grams) of 6.022 x 10^6 atoms Carbon 12? I am given the equation 1 amu=1.6606 x 10^-24 g, but I'm not sure if I should be using this in my conversion factor or not. Can anyone tell me how to set this up? I have a few ideas but unfortunately I don't have any way to check my...

What is the ratio of the radii of muonic hydrogen to hydrogen? Muonic hydrogen consists of a proton and \mu^{-}. How do you calculate this??

Do the electrons revolving around the nucleus have a current associated with them?

String Theory! ok am I getting this right? when people talk about string theory they say that atoms instead of being made out of orbs particles they are waves coming from a fundamental string.

This is a question regarding time and atoms. My question is this: if one were able to stop the occurence of time, or maybe even reverse time, since the atom in forward time is constantly in motion, would the altering of this forward motion cause the atom to fall apart. Would the covalent bonds...

I am confused. Doing Lewis structures is like balancing an equation, putting it together till all the valence electrons work with each other, as far as I can tell. :-p However, some atoms have A TON of valence electrons, like gold which has 25, um, how would I connect it to other elements...

From what I know, the cooling of He-4 atoms causes them to fall into the ground state, making them Bosons. But there's something which confuses me, from what I read, these atoms actually coalesce into one "super-atom". And in quantum theory, it is entirely possible for many atoms to be in one...

Right, as we know from the uncertainty principle we don't know exactly where an electron is, just where it most probably is. This implies that electrons don't follow circular paths like those of planets round the sun (as in the rutherford model) - they must take a more random path. My...

2 H atoms can form a H2 molecule, releasing energy of 5 eV. However, no chemical reaction occurs when 2 isolated H atmos collide! Explain this curious result using the conservation laws. first of all, i don't know what conservation law to use for this question. 2nd i think i don't have much...

Here's my problem: Show that the speed of an electron in the nth Bohr orbit of hydrogen is (alpha*c)/n, where alpha is the fine structure constant. What would be the speed in a hydrogenlike atom with a nuclear charge of Ze? We didn't talk about the fine structure constant in class, so could...

I'm a high school kid taking chemistry, and I'm confused about how atoms get their listed mass. Take Neon for instance, it's got 10 protons, 10 neutrons, and 10 electroncs, it's normally not an ion or isotopic. So from what my teacher's explained, Neon shold have an Atomic Mass of 10 from the...

Hi, I am working on a project in which I need to know the distance between the particles in an ideal gas system. I have tried searching (google) for it but was unable to come with any actual values, just general terms. Can anyone refer me to where I might find this? Thanks

I have to approximately figure out, to the nearest order of magnitude, how many moles of atoms there are in a 12 kg cat.You are also told that The masses of a hydrogen atom, an oxygen atom, and a carbon atom are 1.0 u, 16 u, and 12 u. . all i know is that 1 u=1.66 x 10^-27 kg. From here I...

Why do atoms move faster in a higher temperature? If an atom was initially not moving at all, and then heat was applied to it, would it start moving? If so, what direction will it move in?

What energy do electrons poses in atoms?

I read recently that photons are largely responsible for why matter doesn't collapse in on itself!? For example, the electrons (negatively charged) and protons (positively charged) inside each of the atoms that make up our bodies should ordinarily attract each other and thereby cause us to...

1. Calculate the rms speeds at 20 degrees celcius of atoms of helium (4u)? 2. The escapte speed from the surface of the Earth is 11.2 km/s. Find at what temp. the following gas (O2) have this value as the rms speed? 3. One mole of an ideal monatomic gas is heated from 0 degrees celcius...

I believe I am correct in saying that atoms and particles have waves that can be both predicted and observed (if not please tell me) but, is there a mathematical explanation for the cause of these waves?

Hi, my studies of quantum mechanics aren't too deep (I'm still in high school), but out of pure curiosity, I would like to see the mathematical derivations for the theoretical values for the decay rate /half-life of positronium (either for orthopositronium or parapositronium if they are...

A long time ago, when I did my degree I was taught that Neutrons have a half life of (about 10 minutes?). I also remember that the elementry particle equation was: N <-> P+e. Now, a proton plus an electron could look a lot like a hydrogen atom and I also remember that the electron in a...

When sunlight hits an object, for instance a metal plate, the plate will get hotter, now as i understand, heat is caused by atoms vibrating, so the photons hitting the metal plate must have caused the atoms in it to vibrate, my question is, how do massless? photons transfer energy to the...

A proton is traveling with a speed of (6.550+/- 0.010)e5 m/s. With what maximum accuracy can its position be ascertained. I know that p=mv and x=p/h but what do I do with the +/- 0.010, that is the part that confuses me. How many electrons can be in the n=6, l=4 subshell. I know that l...

umm i got some silly question to ask , i just couldn't find a good answer by my self. 1. is my body made up with atoms, ? i don't really think so, so what's my body made of? i mean my flesh. 2. wats is a piece of material such as wood or gold, made of, ? i mean when u cut down to...

This question is probably pretty silly looking at the complicated discussions going on here, but I'll ask none the less. Why don't Atoms spontaneously collapse? If there is a proton and there is an electron, shouldn't they attract each other and form a neutron? In trying to understand why...

The question is: A hydrogen atom absorbs a photon and makes a transition from a 3d level to a 4f level. What is the wavelength of the absorbed photon ? As i know 3d is n = 3, 4f is n = 4 and wavelength = hc/delta E so the deltaE is E4 - E3 or E3 - E4 ?? thanks..

I know there are trillions of cells in an adult human body but how many atoms are in each cell?

Hey all, I'm a Theoretical Physics undergrad and so far I've only done one course in QM. Mainly playing with the TISE pushing wavefunctions around. Anyway after some trolling on here I've gotten to wondering, in a hydrogen atom why doesn't the electron just collapse into the nucleus? The...

I am a completely ignorant to Physics in general so bear with me. I was reading something recently and the author stated "an electron can jump instantaneously from one atom orbital to another without moving across the space between them" Is this true? Is it taken completely out of context or...

What an atom looks like I opened this thread to bring up a subject seldom discussed because no one expects anymore to see speculations about what atoms may “look like” -- ever since the uncertainty principle demonstrated that we’ll never be able to see an atom in detail. That shouldn’t have...

I was watching some advert (so it was probably talking plop) but they said that they used 'activated carbon' to remove smells. What is activating something? is it ionising or is it just rubbish? Can you activate anything?

Also posted in skepticism forum: Hey everyone, Currently reading a new book by Bill Bryson, "A short history of nearly everything". Well, despite the title, clearly even a short history would be a very, very big book, still the read is quite addicting, and there are many scientific...

Hey everyone, Currently reading a new book by Bill Bryson, "A short history of nearly everything". Well, despite the title, clearly even a short history would be a very, very big book, still the read is quite addicting, and there are many scientific areas to which I was quite unfamiliar...

If density is the mass-volume relationship, what occupies the voids between the areas of two atoms, since total area of an atom is never completely contacting it's neighbors... empty space? [?]

I'm playing with a theory I have at the moment and wondered if anyone could help with giving me some good examples of chemical/molecular bonding in which the partners' an atom will acquire are unpredictable. For example if I had 1g of Hydrogen atoms, 8g of oxygen atoms and 3g of carbon would...

[SOLVED] Evidence that Atoms Have Bizzare Wisdom The old two slit experiment has replicable evidence of bizarre particle wisdom.

Can scientists see either atoms or molecules? If not, what is the smallest object/entity we can see?

Gas is N2O4. fill in the chart. I've got all but atoms. how do I get the # of atoms? why wouldn't it be the same as molecules: 1 mol/22.4L * 6.02x10^23 molecules/1 mol * 5.02L = 1.35x10^23 molecules molecules of are: 1.35x10^23 why couldn't I just replace the word 'molecules' with atoms...

Two hydrogen atoms walk into a bar. One says, "I've lost my electron." The other says, "Are you sure?" The first replies, "Yes, I'm positive..."

Why do atoms want a full outer shell

dear reader, what is happening to the atoms and electrons when one object is rubbed on another? -benzun

Greetings. I am having problems understanding some things about shells. Actually, i am not even sure of if i am talking about shells (i am not sure this is the term in English, but i think it is). I have been taught that a shell is a place of space round the nuclei with a highest probability...

I've heard many times that one of the major faults of the classical model of an atom is that it would collapse. In other words, the electrons wouldn't stay orbiting the nucleus for very long before they hit into it. Although I've heard this many times, I don't think I've ever heard the...

Physics...nature of emission of radiation from atoms Hi everyone i am a Yr 11 student studying physics and i recently got an assignment that consists of a question that i cannot find thouroughly on the internet...hopeing people of this forum can help me... my question is...