Introduction to the Periodic Table and Metals and Nonmetals 2015.notebook
December 15, 2015
Periodic law: Elements are arranged by order of increasing atomic number in periods and they show repeating patterns in their groups with regards to their valence electrons and chemical behavior.
The Periodic Table
Aim: How is the Periodic Table arranged and what patterns emerge from this arrangement?
Nov 3­6:47 PM
Metals are located to the left of the boron staircase. 75% of elements are metals. HYDROGEN IS NOT A METAL
Nov 4­3:08 PM
Nonmetals are located to the right of the boron staircase, except for hydrogen which is top left.
HYDROGEN IS A NONMETAL.
Nov 9­8:13 AM
Nov 9­8:13 AM
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Introduction to the Periodic Table and Metals and Nonmetals 2015.notebook
December 15, 2015
Groups
Organization of the Table
Groups: the vertical columns
Periods: the horizontal rows Elements in the same group have the same number of valence electrons and this gives them similar chemical properties.
AND
Elements in the same group have the same oxidation # which means they will form the same ion. (chemical property)
Nov 4­3:08 PM
Periods
Nov 4­2:31 PM
Do Now
1. What information about an element does the period number give you?
Elements in the same period have the same number of occupied principle energy levels (also called electron shells).
2. What information about an element does the group number give you?
The number of the period tells you how many occupied energy levels an atom has.
e­ config
Nov 5­8:51 AM
Dec 17­7:25 AM
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Introduction to the Periodic Table and Metals and Nonmetals 2015.notebook
December 15, 2015
History of the Table
The Periodic Table
Aim: How do the properties of metals and nonmetals differ?
Nov 3­6:47 PM
Dmitri Mendeleev: Father of the Periodic table
Mendeleev organized the periodic table by listing them in rows by increasing atomic mass. He also put them in groups by reactivity.
Nov 4­11:13 AM
The Modern Periodic Table
Mendeleev's table was close to the table we used today.
Mendeleev's Table
Modern Table
Arranged elements by atomic mass.
Arranged elements by atomic number.
Ordered elements in groups by reactivity.
Groups are based on reactivity and number of valence electrons.
Metals are located to the left of the boron staircase. All metals are solids except for mercury which is a liquid.
The boron staircase is the dividing line for metals and nonmetals.
Nov 4­11:10 AM
Dec 7­1:17 PM
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Introduction to the Periodic Table and Metals and Nonmetals 2015.notebook
December 15, 2015
Properties of Metals
Nonmetals are located to the right of the boron staircase, except for hydrogen which is top left.
The nonmetals exist as mostly gases, some solids and 1 liquid, bromine.
Nov 9­8:17 AM
Properties of Nonmetals
Nov 9­8:20 AM
Dec 7­1:26 PM
Metalloids ­ located on the boron staircase
The 7 metalloids are B, Si, Ge, As, Sb, Te and Po.
Nov 9­8:13 AM
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Introduction to the Periodic Table and Metals and Nonmetals 2015.notebook
December 15, 2015
Properties of Metalloids (semi­metals)
Ge
Dec 7­1:28 PM
Nov 9­8:23 AM
Man­Made Elements
Uranium (atomic number 92) is the last naturally occurring element
Nov 5­5:30 PM
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Attachments
Experiment sodium.asf