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  • Helium Atom
    306 words
    Atom Book Hey kids! Today I'm going to introduce you to the world of atoms. Atoms are little things that you or anybody else have ever seen. Make up things like trees, cars, paper, even you. So let's shrink down to size and see what it's like. We " re going to into the Helium atom today. An atom is made of little things called protons, , and electrons. Protons have a positive charge, neutrons have no charge, and electrons have a negative charge. Electrons travel around the center of the atom, wh...
  • Atoms The Electrons
    1,450 words
    A basic guide to resistance. Electron Flow Model Everything is made of very small particles called atoms. Each atom has a heavy positively charged nucleus and is surrounded by a cloud of light, negatively charged, electrons. In metals, the outer most electron of each atom is weakly attracted to the positive nucleus and can escape from the atom and wander around between the atoms. [Note 1] So, in metals, we have all these millions and millions of electrons whizzing about at high speed, in random ...
  • Kreb's Cycle And The Electron Transport System
    937 words
    ATP Production Metabolism, which encompasses glycolysis, the Kreb's cycle, and the electron transport system, occurs in the mitochondria of cells. The mitochondria consist of a double membrane and an inner compartmentalization called the matrix. Each of the processes of metabolism occurs in specific locations in and around the mitochondria. The process of glycolysis occurs in the cytoplasm just outside the outer membrane of the mitochondria. The Kreb's cycle occurs within the matrix and the elec...
  • Electrons Stay In An Energy Level
    495 words
    Semiconductors have an electrical resistivity that is in between those of good conductors and those of good insulators. Both silicon and germanium, which are the two basic semiconductors, have four electrons in the outermost electron sub shell. In formation of the lattice structure of the silicon or germanium, all the valence electrons are involved in the bonding, so the material should be an insulator. However, an unusually small amount of energy is needed to break one of the bonds and set an e...
  • Certain Numbers Of Electrons The First Shell
    399 words
    Bohr at the Rutherford Lab Everyone at the time imagined the atom as a "plum pudding". That is, it was roughly the same thing throughout, with negatively charged electrons scattered about in it like raisins in a pudding. As part of an experiment with x-rays in 1909, Rutherford was shooting a beam of alpha particles at a sheet of gold foil only 1/3000 of an inch thick, and tracing the particles' paths. Most of the particles went right through the foil, which would be expected if the atoms in the ...
  • Number Of Protons Their Atoms
    326 words
    33. Elements differ according to the number of protons their atoms contain, a value called the element's atomic number. All atoms of a given element have the same number of protons and an equal number of electrons. The number of neutrons in an atom is not predictable but is generally as great or greater than the number of protons. The total number of protons plus neutrons in an atom is called the atom's mass number. 40. Protons, electrons, and neutrons. Protons, neutrons (1 amu) and electrons 5 ...

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