#### Transcript Document

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 This is not a punishment!!!!
 I need to make sure that this is
academically viable in order for you
to be able to keep this reward
going.
 On a separate sheet of paper answer the
following questions in complete sentences:
1.
2.
How has the model of the atom changed over
time?
How is the Periodic Table Organized?
Turn In Goal Sheets for History of the Atom
 Remember the goal of these sheets is to show how
your knowledge progressed over the course of the
unit
 If you wanted an “A” you needed to write your own
personal goal and show the proof:


Extra work to show your knowledge
Conference with me about what you know
Turn In Goal Sheets for History of the Atom
 There can be no blanks you must answer every
questions
 Make sure you answer the questions (Learning
Goals/Targets) to show you understand the material.

That’s why I wir
 TURN THEM IN THURSDAY
Still a part of the same
unit
 10/20/14 Bohr Model
pg#
the new Learning Target:
How does the Bohr model relate
to atomic structure and the
organization of the Periodic table?
Glossary
● atomic number – The number of protons in an atom.
●
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Sometimes called the proton number.
electron arrangement – A shorthand way of writing the
number of electrons in an atom’s electron shells.
element – A substance made up of only one type of atom.
group – A column in the periodic table containing elements
with the same number of outer shell electrons and similar
chemical properties.
period – A row in the periodic table containing elements
with the same number of full electron shells.
periodic table – The table that lists all the elements in
order of increasing atomic number, arranged into groups and
periods.
property – Any characteristic of an element.
Bohred… again?
1. Atomic Number= Protons= electrons
2. Atomic Mass-Protons=Neutrons
3. First shell only holds 2 electrons
4. Next shells can hold 8 electrons
Rules for Bohr Diagrams
3. First shell only holds 2 electrons
4. Next shells can hold 8 electrons
1.
Hydrogen