Download Agenda/To Do - Perry Local Schools

April 11, 2012
1. Have your Atom model out‐‐ WITH your GREEN rubric.
2. Have your Periodic Table out (the one you colored) and your crossword. Agenda/To Do:
Ho
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1. Show and Tell-- Atom Models
2. Check homework/table
3. Periodic Table Notes
4. Periodic Table Basics (homework)
5. Atom Study Guide
6. Element Quiz-- FRIDAY!
You will need to be able to identify the name or symbol for the
elements in the following groups:
1, 2, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18
THE PERIODIC TABLE OF ELEMENTS
A. Dimitri Mendeleev - created the first
periodic table *(1871)
1. Organized by similar physical and
chemical properties between the elements.
2. Arranged the elements into rows in
order of increasing mass so that elements
of similar properties were in the same
column.
*created the first periodic table
B. The Modern Periodic Table of
Elements
* arranged according to increasing atomic number
* properties of elements repeat in predictable
ways
* The modern periodic table contains 118 different
kinds of elements.
1. Classes of Elements:
A. Metals- left side of periodic table
B. Non-metals- right side of periodic
table (except H)
C. Metalloids- form a zig zag line
splitting the metals and non-metals
C. Reading the Periodic Table
The usual parts include:
1. Symbol- an abbreviation
of an element's name which
comes from the Greek or
Latin name.
*First letter MUST be
uppercase, second
letter MUST be lowercase.
2. Atomic number- # of p+
3. Mass number- # of p+ plus n
4. Atomic massaverage mass that
comes from the isotopes.
D. Organization
1. Periods (series) – horizontal
rows on the periodic table
A. The period number will tell you
how many energy levels the atoms of
the elements will have.
2. Groups (families) – vertical columns
on the periodic table
A. The group number will tell how
many electrons are in the outer
energy level of the atoms of elements
in that group
(valence electrons)
B. Groups
#1 Alkali metals
#2 Alkaline earth metals
#3-12 Transition metals
#13-16 Mixed
#17 Halogen
#18 Noble gases
Groups on the periodic table
• Elements in a group have similar
properties because they have the same
number of valence electrons.
The Alkali Metals
-Group IA
-have one valence electron
-are extremely reactive
-like to combine with Group 17 (7A)
elements
Alkaline Earth Metals
-Group IIA
-Have 2 valence electrons
-Reactivity of alkaline earth metals are
shown by the way they react with water
Like to combine with group 16 (6A)
elements
The Carbon Family
-Group IVA
-each element contains 4 valence
electrons
-most compounds in your body
contain carbon
The Nitrogen Family
• Group VA
• All contain 5 valence electrons
The Oxygen Family
-Group VIA
- has 6 valence electrons
-Like to combine with group 2
The Halogens
• Group VIIA
• All have 7 valence electrons
• All have similar chemical
properties
• All are highly reactive
• Like to combine with group 1
The Noble Gases
-Group VIIIA
-most have 8 valence electrons
(Helium has 2)
--unreactive –does not react with
other elements to form compounds
-outer energy level completely filled
with electrons
-stable octet
Transition Metals
• Located in the central of the
periodic table
• Elements are metals
• Elements are placed here because
they do not share the same properties
with group 1 or group 2 elements
HO
ME
WO
RK
Periodic Table Basics Worksheet
Atom Study Guide