Atomic Structure

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Atomic Structure
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What are the 3 major parts of an atom?
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What are the 3 major parts of an atom?

• Proton
• Neutron
• Electron

4
Draw a diagram showing the location of each part
of the atom.
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Draw a diagram showing the location of each part
of the atom.
http//www.eskom.co.za/nuclear_energy/fuel/fuel.ht
ml
6
Draw a diagram showing the location of each part
of the atom.
See more diagrams at http//www.bmb.psu.edu/cour
ses/bisci004a/chem/basechem.htm
7
Draw a diagram showing the location of each part
of the atom.
http//www.bmb.psu.edu/courses/bisci004a/chem/atom
s.jpg
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Draw a diagram showing the charges of each part
of the atom.
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Draw a Diagram of an Atom
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Draw a diagram showing the charges of each part
of the atom.
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Describe Proton
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Describe Proton

• Protons are positively charged particles found in
  the atomic nucleus. Protons were discovered by
  Ernest Rutherford..
• Experiments done in the late 1960's and early
  1970's showed that protons are made from other
  particles called quarks. Protons are made from
  two 'up' quarks and one 'down' quark.

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Describe Neutron
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Describe Neutron

• Neutrons are uncharged particles found in the
  atomic nucleus. Neutrons were discovered by James
  Chadwick in 1932.
• Experiments done in the late 1960's and early
  1970's showed that neutrons are made from other
  particles called quarks. Neutrons are made from
  one 'up' quark and two 'down' quarks.

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Describe Electron
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Describe Electron

• Electrons are negatively charged particles that
  surround the atom's nucleus. Electrons were
  discovered by J. J. Thomson in 1897.
• Electrons determine properties of the atom.
  Chemical reactions involve sharing or exchanging
  electrons.

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Describe Nucleus
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Describe Nucleus

• 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.

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Describe Quark
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Describe Quark

• Believed to be one of the basic building blocks
  of matter. Quarks were first discovered in
  experiments done in the late 1960's and early
  1970's.
• Three families of quarks are known to exist. Each
  family contains two quarks. The first family
  consists of Up and Down quarks, the quarks that
  join together to form protons and neutrons.
• The second family consists of Strange and Charm
  quarks and only exist at high energies.
• The third family consists of Top and Bottom
  quarks and only exist at very high energies.

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Describe Isotope

• Atoms that have the same number of protons but
  different numbers of neutrons

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Describe Isotope

• Example

http//education.jlab.org/glossary/isotope.html
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What is the Electron Cloud Model?
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What is the Electron Cloud Model?

• 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.

For more information, click here http//regentspr
ep.org/Regents/physics/phys05/catomodel/cloud.htm
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What is the Electron Cloud Model?Diagram 1
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What is the Electron Cloud Model?Diagram 2