Electrons and Nuclei

Electrons and nuclei Not long after the disco truly of the speck, it was observe that the atom is made up of two different regions. this instant the bearing this was discovered is the way that about cutgs atomic pass in along 18 learned close to microscopic sections. That is, you bombard them with different microscopic molecules, and see what happens. This is what Ernest Rutherford was doing early in this century, in an experiment in which gold atoms were bombarded with alpha particles. (Dont relate about what alpha particles ar. Its not important here.) He name the results quite remarkable. The experiment used a very thin gold foil as the tar pop, and Rutherford expected most of the alpha particles to go on through, and be detected on the other side. What he found was that a few of the particles, and not intimately as few as he expected, bounced covering ardor more or less in the direction from which they came. Rutherford tried and true to figure out how thi s could happen, and the best scenario he could come up with was, in fact, the truth. The bulk of an atom is concentrated in a very small region at the center. When an alpha particle hits this region, it bounces back. When it misses, it goes on through. Physicists didnt stop here. They found new, more powerful, more hostile ways to bombard atoms, and built better detectors to measure the result.

And this gave a much clearer picture of whats inside an atom. The meat is populated by two kinds of particles: positively charged protons, and galvanic carally neutral particles, called neutrons. These particles are nearly identical to each oth er, except in electric charge. Protons and n! eutrons (nucleons, as theyre referred to collectively) are much heavier than electrons, and thats why most of the deal of an atom is in the nub. Atoms are classified according to the pattern of protons in their nuclei. For example, any atom with six protons in its nucleus is a carbon atom. Any atom with one proton is a hydrogen atom. 26 protons means iron, 92 protons for uraniu...If you want to get a full essay, order it on our website: BestEssayCheap.com

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