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Atomic Structure

Atomic Structure. Proton Neutron Electron. What are the 3 major parts of an atom?. Atom Video Clip. Describe Proton. Positive Charge Mass of 1 atomic mass unit ( amu ) Found in the nucleus Equal to the atomic Number Determines the element Remember PP (Protons are positive).

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Atomic Structure

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  1. Atomic Structure

  2. Proton Neutron Electron What are the 3 major parts of an atom?

  3. Atom Video Clip

  4. Describe Proton • Positive Charge • Mass of 1 atomic mass unit (amu) • Found in the nucleus • Equal to the atomic Number • Determines the element • Remember PP (Protons are positive)

  5. Describe Neutron • No charge • Mass of 1 amu • Found in the nucleus • Number of neutrons + number of protons = mass number • To get the number of neutrons, mass number – atomic number • Remember NN (No charge on Neutrons)

  6. Describe Electron • Negatively charged • No mass • Found in the electron cloud • In a neutral atom = equal to the number of protons

  7. The nucleus is the central part of an atom. It is composed of protons and neutrons. The nucleus contains most of an atom's mass. It was discovered by Ernest Rutherford in 1911. Describe Nucleus

  8. Gathering Information from the periodic table

  9. Diagram showing the location of each part of the atom. http://www.eskom.co.za/nuclear_energy/fuel/fuel.html

  10. Diagram showing the location of each part of the atom. See more diagrams at:http://www.bmb.psu.edu/courses/bisci004a/chem/basechem.htm

  11. Diagram showing the location of each part of the atom. http://www.bmb.psu.edu/courses/bisci004a/chem/atoms.jpg

  12. Atoms that have the same number of protons but different numbers of neutrons Describe Isotope

  13. Describe Isotope Example: http://education.jlab.org/glossary/isotope.html

  14. Model of the atom pictures the electrons moving around the nucleus in a region called an electron cloud. The electron cloud is a cloud of varying density surrounding the nucleus. The varying density shows where an electron is more or less likely to be. Atoms with electrons in higher energy levels have additional electron clouds of different shapes that also show where those electrons are likely to be. What is the Electron Cloud Model? For more information, click here: http://regentsprep.org/Regents/physics/phys05/catomodel/cloud.htm

  15. What is the Electron Cloud Model?Diagram 1:

  16. What is the Electron Cloud Model?Diagram 2:

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