Friday, September 23, 2011

atoms...tom-tom...no just atoms

Atomic Structure:

In this unit we learned about atoms and their atomic structures. The Figure above shows the standard showing of the structure.

This gives off a more detailed structure of the atom. As you can see from both figures, the protons and neutrons are both in the nucleus of the atom. The electrons are on set orbits around the center (nucleus) People (scientists) use to believe that the electrons were floating randomly around the nucleus. This has been proven wrong though.

Many structures of this atom were developed. most famous was the plum pudding structure, created by J.J. Thompson (who also discovered the electron in 1897) in 1904 before the discovery of the atom nucleus. Electrons represented the negatively charged "plums" and the positively charged "pudding" was the protons.
Fun fact: named the plum pudding model due to the unnerving resemblance to english plum pudding dessert.

Isotopes:


Carbon Isotopes :12, 13, 14

Isotopes are a variation of a normal element. Such as Carbon. The electrons are all the same in a isotope yet the proton and neutron count are different each time. 

Now the mass for the neutrons and protons are relatively the same. Only the electrons are different. Their mass ratio is extreamely low. Ill find a link to it soon.