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The Atom

Published on Dec 07, 2015

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PRESENTATION OUTLINE

1.

The atom is the smallest unit of matter = chemical properties of elements
Greek word meaning uncuttable

Photo by jev55
2.

The atom has three parts: proton, neutron, and electron

Photo by Idaho National Laboratory
3.

PROTONS

POSITIVE CHARGE LOCATED IN NUCLEUS
Photo by fdecomite
4.

NEUTRONS

NEUTRAL CHARGE LOCATED IN NUCLEUS
Photo by lednichenkoolga
5.

ELECTRONS

NEGATIVE CHARGE LOCATED OUTSIDE THE NUCLEUS IN A CLOUDLIKE REGION 
Photo by NASA Goddard Photo and Video
6.

ATOMIC NUMBER

NUMBER OF PROTONS, IDENTIFIES ELEMENT
Photo by denn
7.

MASS NUMBER

= # PROTONS+# NEUTRONS
Photo by NASA's Marshall Space Flight Center
8.

# electrons = # protons
(Opposite charges cancel out)

Photo by NASA Goddard Photo and Video
9.

ISOTOPE

ELEMENT WITH SAME #OF PROTONS, DIFFERENT #OF NEUTRONS
Photo by ramblinbears
10.

Ion

Electron is added (-) or Electron is removed (+)
Photo by Image Editor

Marybeth Mineo