Chemistry 101

last SG · 2005-11-12T01:56:23+00:00

I know you gonna get mad with me but why will that produce that energy ( not force but energy) ?

The return SG

And also where does this mysterious forces come from? I can't figure it out, really. I thought there must be experts who can answer so I come here. Hope to clear my doubts.

deathscythe99 SG

If u learnt Newtonian Physics u would know that any object will have a gravitational force acting on another.

Regardless of distance also.

Rolling Eyes

The return SG

And why did any object has a gravitational force acting on another? Why? It sounds so strange. I am interested in where did the force come from?

deathscythe99 SG

Mysterious?

The galaxy is just moving away from us...in fact, Hubble's observations indicate that the rate which galaxies are moving away from us is proportional to how far the galaxy is from us.

deathscythe99 SG

There's the claim of the presence of the particle graviton, which they are trying to assess whether it actually is present.

Anyway, you can GOOGLE IT LAR! Rolling Eyes

Read this: http://en.wikipedia.org/wiki/Gravitational_force

U shld ask a prof lor

The return SG

You see,

proton = +ve charge
neutrons = -ve charge

Opposite charge attracts and inside a nucleus, there must be equal number of protons and neutrons for the nucleus to be stable. I remember that there are many cases when neutrons < protons. So there will be instability in the nucleus. So the nuclear binding energy comes in because of this differeces. So the question I'm interested is why this energy can appear when there is a differences in number b/w protons and neutrons? Contradict the like charge repulse and unlike charge attracts theory leh.

Hope someone can answer.

sgFish SG

gluons.

deathscythe99 SG

Neutrons have no -ve charge. Electrons have Rolling Eyes

Neutrons = protons + electrons

And no, there is not necessary equal no of protons and neutrons. In fact, neutrons > protons (look @ periodic table!) Why? Cos the neutrons are the ones which will interact with each other to give the electrostatic forces of repulsion while neutron-protons will interact to give strong nuclear force.

The return SG

They don't know lar. They will always tell you it is facts and please accept it. Haiz.......

The return SG

What is this words?

deathscythe99 SG

Or u asked the wrong one? Laughing

This is actually in the realm of physics Rolling Eyes

How old are u...?

The return SG

Ops, my bad. I forget my chemistry. Then will can protons be hold together for goodness sake. Like charges repulse.

deathscythe99 SG

Repulsion is due to electrostatic forces, these are short ranged.

Attraction, is due to the presence of strong nuclear attractive force

The return SG

No lar,I always ask the pro who teach that subject and if I ask too much, they will ask me to go and accept it and they like not too sure like that.

deathscythe99 SG

Really?

Who's the prof...care to sharE? Laughing

Then I can ask him same question whahahaha.

BTW...how old are u...seriously? Rolling Eyes

The return SG

Originally posted by deathscythe99:

Repulsion is due to [b]electrostatic forces, these are short ranged.

Attraction, is due to the presence of strong nuclear attractive force[/b]

I mean how can a protons with +ve charges and neutrons with no charge be hold together in a necleus so msyteriously with that mysterious energy helping the necleus to be stable. I find it hard to imagine.

deathscythe99 SG

I already said....there exist these 2 forces.

U must accept that there is such a thing as FORCE... Rolling Eyes

Moreover, there's the angular momentum to ensure that it is all kept together...so, why not?

The return SG

Hmm... Don't know you much. Can don't tell you or not. Embarassed

I think you can guess my age liao lar...

Seriously, the most pro I know only teach what he/she knows. Beyond that, he's having trouble explaining.

The return SG

Originally posted by deathscythe99:

I already said....there exist these 2 forces.

U must accept that there is such a thing as [b]FORCE... Rolling Eyes

Moreover, there's the angular momentum to ensure that it is all kept together...so, why not?[/b]

I am talking about protons inside a nucleus lar.

The return SG

Originally posted by deathscythe99:

Repulsion is due to [b]electrostatic forces, these are short ranged.

Attraction, is due to the presence of strong nuclear attractive force[/b]

But when the number of protons inside the nucleus increases, shouldn't the repulsion also increases and makes the nucleus extremely unstable? Something must have been holding the nucleus together. If a force or energy exist out of no where to hold them together, then there is where I got lost.

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