Download Physical Science: Atomic Structure Guided Notes

Physical Science: Atomic Structure Guided Notes 2013
Section 1: The atom
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Tiny units of matter that determine the ______________of matter.
Idea first proposed by Democritus using the word____________.
Building blocks of ____________________
Smallest particles of _______________that still have all of the properties of that
element.
What’s in an atom?
Subatomic Particle
Charge
Mass (kg)
Location in atom
Bohr Model
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Electrons move in set paths around the nucleus
Each electron has a certain ________________
Electrons can only be in certain energy levels.
Electrons must ___________energy to move to a higher energy level or ___________energy to
return to a lower energy level.
Later Models:
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Electrons behave more like waves on a vibrating string than particles as described by
Bohr.
An electrons exact ________________ cannot be determined
Electrons exist in energy levels.
Electrons are found within _________________in the energy levels
________________electrons are found in the outermost energy levels and determine
the atoms chemical properties.
Draw a Bohr model for each atom below:
Sodium (Na):
Oxygen (O):
Helium(He):