Modern Chemistry Chapter 5 The Periodic Law
16
Chapter 5 Section 1 Histo ry of the Periodic Table pages 133-137 1 Modern Chemistry Chapter 5 The Periodic Law Sections 1-3 History of the Periodic Table Electron Configurations and the Periodic Table Electron Configurations and Periodic Properties
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Modern Chemistry Chapter 5 The Periodic Law. Sections 1-3 History of the Periodic Table Electron Configurations and the Periodic Table Electron Configurations and Periodic Properties. Section 1. History of the Periodic Table. Chapter 5 Section 1 History of the Periodic Table pages 133-137. - PowerPoint PPT Presentation
Transcript of Modern Chemistry Chapter 5 The Periodic Law
Chapter 5 Section 1 History of the Periodic Table pages 133-137
1
Modern ChemistryChapter 5
The Periodic Law
Sections 1-3History of the Periodic Table
Electron Configurations and the Periodic Table
Electron Configurations and Periodic Properties
Chapter 5 Section 1 History of the Periodic Table pages 133-137
2
Section 1
History of the Periodic Table
Chapter 5 Section 1 History of the Periodic Table pages 133-137
Chapter 5 Section 1 History of the Periodic Table pages 133-137
3
Sect
ion 1
Voca
bula
ryPeriodic tablePeriodic lawLanthanideActinide
Chapter 5 Section 1 History of the Periodic Table pages 133-137
Click on the picture to go to the web site with this Flash Animation.
Chapter 5 Section 1 History of the Periodic Table pages 133-137
4
Relative Atomic Mass • Stanislao Cannizzaro devised a
method for measuring relative atomic mass in 1860.
Chapter 5 Section 1 History of the Periodic Table pages 133-137
Chapter 5 Section 1 History of the Periodic Table pages 133-137
5
Mendeleev and Chemical Periodicity • Mendeleev put names and
properties of elements on cards• He arranged cards by properties
and looked for patterns• When elements were in order by
atomic mass similarities in properties appeared at regular intervals.
Chapter 5 Section 1 History of the Periodic Table pages 133-137
Chapter 5 Section 1 History of the Periodic Table pages 133-137
6
Peri
od
ic T
able
Im
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p. #
# Chapter 5 Section 1 History of the Periodic Table pages 133-137
Chapter 5 Section 1 History of the Periodic Table pages 133-137
7
Mendeleev and Chemical Periodicity • Periodic: occurring at regular
intervals• 1869: He left spaces in his table
and predicted properties of missing elements
• Sc, Ga & Ge were found with the properties that Mendeleev had predicted
Chapter 5 Section 1 History of the Periodic Table pages 133-137
Chapter 5 Section 1 History of the Periodic Table pages 133-137
8
Pre
dic
ted
ele
men
ts im
age
Chapter 5 Section 1 History of the Periodic Table pages 133-137
Chapter 5 Section 1 History of the Periodic Table pages 133-137
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Nen
dele
ev’s
Peri
od
ic T
able
p. 1
34 Chapter 5 Section 1 History of the Periodic Table pages 133-137
Chapter 5 Section 1 History of the Periodic Table pages 133-137
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Moseley and the Periodic Law• Moseley put elements in order by
increasing nuclear charge• Let to the definition of atomic
number• Periodic Law: The physical and
chemical properties of the elements are a periodic function of their atomic numbers.
Chapter 5 Section 1 History of the Periodic Table pages 133-137
Chapter 5 Section 1 History of the Periodic Table pages 133-137
11
Hub
bard
’s P
eri
odic
Tab
le 1
92
4-1
95
0’s
Chapter 5 Section 1 History of the Periodic Table pages 133-137
Chapter 5 Section 1 History of the Periodic Table pages 133-137
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The Modern Periodic Table • The periodic table is an
arrangement of the elements in order of their atomic number so that elements with similar properties fall in the same column.
• A web site with many different periodic tables: Chemogenesis
Chapter 5 Section 1 History of the Periodic Table pages 133-137
Chapter 5 Section 1 History of the Periodic Table pages 133-137
13
Overv
iew
of
the p
eri
od
ic t
able
anim
ati
on
p. 1
39 Chapter 5 Section 1 History of the Periodic Table pages 133-137
Chapter 5 Section 1 History of the Periodic Table pages 133-137
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Lego P
eri
od
ic T
ab
le
Chapter 5 Section 1 History of the Periodic Table pages 133-137
Chapter 5 Section 1 History of the Periodic Table pages 133-137
15
Noble Gases • Lord Rayliegh and Sir Ramsey
discovered Ar in 1894.• In 1868 helium discovered on the
sun, but in 1895 it was discovered on earth.
• Inert, non reactive• Fluorine can be forced to make
compound with some noble gases.
Chapter 5 Section 1 History of the Periodic Table pages 133-137
Chapter 5 Section 1 History of the Periodic Table pages 133-137
16
Section 1 Homework
Chapter 5 Section 1 History of the Periodic Table pages 133-137
