Go to this to see our onion model:
http://www.youtube.com/watch?v=Xsn5g0b332o&feature=related
Sunday, September 19, 2010
Friday, September 17, 2010
Monday, September 13, 2010
Sunday, September 12, 2010
Atomic Mass
Atomic Mass:
- It is the mass of the protons, electrons, and neutrons in one single atom.
- Unusually it is done by AMUs or atomic mass units.
- Atomic mass is normally said to be the mass of an atom which is the mass of one isotope.
- An isotope is defined by dictionary.com as "any of two or more forms of a chemical element, having the same number of protons in the nucleus, or the same atomic number, but having different numbers of neutrons in the nucleus, or different atomic weights."
- Some people say that atomic mass is similar to relative atomic mass, average atomic mass, and atomic weight but that isn't correct.
- Relative atomic mass is very close to atomic weight and now it is replacing atomic weight
- John Dalton was basically the first person to determine the atomic weight of atoms
Science Test!
https://docs0.google.com/a/sdsgriffin.org/document/edit?id=1x7q1qvdKHwqiJic6j7v7deM5SotOcYERCHVJLO-DOhA&hl=en#
This is the answer to question 1 from test 1!
This is the answer to question 1 from test 1!
Tuesday, September 7, 2010
Sodium Chloride (Extra Credit)
Sodium Chloride is the most interesting compound. The way to write is scientifically is NaCl. It is the most interesting to me for many reasons. One reason I think that they are the most interesting is that it is all around us. One place everyone has seen it is right on their kitchen table. You might not have know this but it is your table salt that you use most likley every day. You might not have know that it is a compound. Another place you can find it is in the ocean. It is the main reason from making the ocean salty. It is also used when their is ice or snow on the road and we just put some Sodium Chloride on it. It also is in a lot of shampoos that we have today. That is why this is so cool is that we use this stuff everyday but really didn't know that it was anything that amazing.
Back to the real facts of Sodium Chloride though. Sodium Chloride is made up of Sodium and Chlorine. It is an ionic compound and that basically just means that the ions are kept together in a networked structure by ionic bonds. NaCl is an oderless and colorless compound that looks like crystals. It is also non-flammable which could be the reason it is the main part in a fire extinguisher that makes it get rid of fire. This is all the reasons why NaCl is the coolest compound out there!!!!!!
(By the way if anyone watches Jimmy Neutron here I would just like to say that in that episode where he is working at this reastraunt and the manager is really stupid, the manager says sweep up that salt and Jimmy is like ok I will get that Sodium Chloride and they get in this fight over what the name of it is because the manager thinks that Jimmy is being like stupid or something!!! Really a great show! Sorry just had to add that in there.)
Back to the real facts of Sodium Chloride though. Sodium Chloride is made up of Sodium and Chlorine. It is an ionic compound and that basically just means that the ions are kept together in a networked structure by ionic bonds. NaCl is an oderless and colorless compound that looks like crystals. It is also non-flammable which could be the reason it is the main part in a fire extinguisher that makes it get rid of fire. This is all the reasons why NaCl is the coolest compound out there!!!!!!
(By the way if anyone watches Jimmy Neutron here I would just like to say that in that episode where he is working at this reastraunt and the manager is really stupid, the manager says sweep up that salt and Jimmy is like ok I will get that Sodium Chloride and they get in this fight over what the name of it is because the manager thinks that Jimmy is being like stupid or something!!! Really a great show! Sorry just had to add that in there.)
Saturday, September 4, 2010
History of the Electrons and Protons
Electrons:
J.J. Tomson was the man that in 1897 discovered that an atom has negatively charged parts. He thought that these negative parts are in the atom just kind of floating around but he was wrong. He also relized that an atom has a neutral charge which means there must be positively charged parts also. But, back to electrons. They have a very small mass compared to the other parts of an atom. It has a mass of 0.000000000000000000000000000911 grams. Is about 1/836 atomic mass units.They are very small and very light and they are nothing compared to the nucleus of an atom. Electrons can be at different energy levels throughout the atom. They can take in or let go of something called a photon. A photon is particles of light. To learn more about these photons go to http://www.windows2universe.org/physical_science/magnetism/photon.html In the atom these electrons don'tgo in little tracks like some people thought. Erwin Shroedinger found out that these electrons just zoom around the atom where ever they want. There isn't a certain circle they follow the whole time. The Modern Atomic Model has a nucleus in the center and then there is a big area where we think the electrons might be. As you can see these electrons are very interesting but here is some information about the proton.
Protons:
Protons are very close to the size of a neutron and a lot bigger than electrons. It has a mass of 1 atomic mass units.It was discovored in 1897 by J.J. Thomson. It has 1,836 times more mass than an electron. They are positively charged and there are the same number as protons as electrons. You can find how many protons by looking at the atomic number in the upper corner of the atom in the periotic table. A proton is made up of these things called quarks. There are three quarks in every proton. They are up, up, and down. There are six types of quarks and they are up, down, top, bottom, charm, and strange. These quarks are held together by gluons. Protons are in the middle of the atom with the neutron. The neutrons and protons make up the nucleus that has all the mass of an atom.
Here is a drawing of an atom. But remeber that the electrons don't go on set circles they go where they want to go and just sort of bonce around.
This shows a proton and the quarks that are inside of it and that are held together by gluons.
Citations:
I got all my information from http://en.wikipedia.org/wiki/Electrons http://en.wikipedia.org/wiki/Proton http://www.windows2universe.org/physical_science/physics/atom_particle/proton.html http://www.windows2universe.org/physical_science/physics/atom_particle/electron.html
J.J. Tomson was the man that in 1897 discovered that an atom has negatively charged parts. He thought that these negative parts are in the atom just kind of floating around but he was wrong. He also relized that an atom has a neutral charge which means there must be positively charged parts also. But, back to electrons. They have a very small mass compared to the other parts of an atom. It has a mass of 0.000000000000000000000000000911 grams. Is about 1/836 atomic mass units.They are very small and very light and they are nothing compared to the nucleus of an atom. Electrons can be at different energy levels throughout the atom. They can take in or let go of something called a photon. A photon is particles of light. To learn more about these photons go to http://www.windows2universe.org/physical_science/magnetism/photon.html In the atom these electrons don'tgo in little tracks like some people thought. Erwin Shroedinger found out that these electrons just zoom around the atom where ever they want. There isn't a certain circle they follow the whole time. The Modern Atomic Model has a nucleus in the center and then there is a big area where we think the electrons might be. As you can see these electrons are very interesting but here is some information about the proton.
Protons:
Protons are very close to the size of a neutron and a lot bigger than electrons. It has a mass of 1 atomic mass units.It was discovored in 1897 by J.J. Thomson. It has 1,836 times more mass than an electron. They are positively charged and there are the same number as protons as electrons. You can find how many protons by looking at the atomic number in the upper corner of the atom in the periotic table. A proton is made up of these things called quarks. There are three quarks in every proton. They are up, up, and down. There are six types of quarks and they are up, down, top, bottom, charm, and strange. These quarks are held together by gluons. Protons are in the middle of the atom with the neutron. The neutrons and protons make up the nucleus that has all the mass of an atom.
Here is a drawing of an atom. But remeber that the electrons don't go on set circles they go where they want to go and just sort of bonce around.
This shows a proton and the quarks that are inside of it and that are held together by gluons.
Citations:
I got all my information from http://en.wikipedia.org/wiki/Electrons http://en.wikipedia.org/wiki/Proton http://www.windows2universe.org/physical_science/physics/atom_particle/proton.html http://www.windows2universe.org/physical_science/physics/atom_particle/electron.html
Thursday, September 2, 2010
Citations
Oh, sorry I forgot to add this. I got all my information from wikipedia and from Mr. Harrelson's slide show!
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