Chemistry: Introduction to the Periodic Table
Δημοσιεύτηκε στις 8 Απρ 2015
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Chemistry: Introduction to the Periodic Table
The
periodic table is the most powerful tool chemists have for organizing
chemical information. Without it, chemistry would be a chaotic,
confusing jumble of seemingly random observations. What makes the
periodic table really invaluable is its use as a predictive tool. You
can predict a lot about the chemical behavior of an element if you know
where it is on the periodic table.
We give credit to Dmitri
Mendeleev for the first Periodic Table. He organized the elements in his
table in order of atomic mass. Henry Moseley modified the table,
ordering the elements in terms of atomic number. This is the periodic
table we use today.
You can click on the links below to jump to sections in the lesson:
0:34 What does each square tell you about each element - name, chemical symbol, atomic number, atomic mass
1:10 Metals - where metallic elements are found on the periodic table
1:22 Nonmetals - where non-metallic elements are found on the periodic table
1:37 Metalloids - where metalloids are found on the periodic table
1:54 Elements are listed in order of increasing atomic number
2:04 Each element has a unique atomic number
2:11 Why elements are organized into columns - periodicity of chemical behavior/ Periodic Law
2:48
Columns are called groups or families - elements in the same group
have similar chemical properties (valence electron configurations)
3:02 7 Rows called Periods - correspond to energy levels
3:15 Alkali metals and alkali Earth metals - s orbitals being filled
3:27 p orbitals being filled on right side of periodic table
3:34 Noble gases have filled valence shell
3:42 Transition metals - d orbitals being filled
3:50 Inner Transition metals - Lanthanides and Actinides - f orbitals being filled
4:09 How Groups are numbered
5:09 Changes to the periodic table
5:24 The first periodic table (in Mendeleev's handwriting)
5:54 The work of Dmitri Mendeleev 1869 - in order of increasing atomic mass
6:07 Lothar Meyer
6:25 Mendeleev left gaps in his table and proposed missing elements
7:14 Henry Moseley modified periodic table - re-ordered by atomic number instead of atomic mass
8:38 92 Naturally occurring elements
8:41 synthesized elements
Our Periodic Table app is FREE in the Google Play store!
http://goo.gl/yg9mAF
Don't miss our other chemistry videos:
https://www.youtube.com/watch?v=aQw9G...
Please Subscribe so you'll hear about our newest videos!
http://bit.ly/1ixuu9W
If you found this video helpful, please give it a "thumbs up" and share it with your friends!
Written and Produced by Kimberly Hatch Harrison
About our instructor:
Kimberly
Hatch Harrison received degrees in Biology and English Literature from
Caltech before working in pharmaceuticals research, developing drugs for
autoimmune disorders. She then continued her studies in Molecular
Biology (focusing on Immunology and Neurobiology) at Princeton
University, where she began teaching as a graduate student. Her success
in teaching convinced her to leave the glamorous world of biology
research and turn to teaching full-time, accepting a position at an
exclusive prep school, where she taught biology and chemistry for eight
years. She is now the head writer and producer of Socratica Studios.
Creative Commons Picture Credits:
Dmitri Mendeleev Periodic Table monument in Saint Petersburg
http://en.wikipedia.org/wiki/File:San...
Author: Heidas
Plasma globe video
http://en.wikipedia.org/wiki/File:Pla...
Author: Colin
http://www.theguardian.com/science/20...
Tweet about this video! http://bit.ly/1piNpt5
#socratica #socraticachemistry
Chemistry: Introduction to the Periodic Table
The
periodic table is the most powerful tool chemists have for organizing
chemical information. Without it, chemistry would be a chaotic,
confusing jumble of seemingly random observations. What makes the
periodic table really invaluable is its use as a predictive tool. You
can predict a lot about the chemical behavior of an element if you know
where it is on the periodic table.
We give credit to Dmitri
Mendeleev for the first Periodic Table. He organized the elements in his
table in order of atomic mass. Henry Moseley modified the table,
ordering the elements in terms of atomic number. This is the periodic
table we use today.
You can click on the links below to jump to sections in the lesson:
0:34 What does each square tell you about each element - name, chemical symbol, atomic number, atomic mass
1:10 Metals - where metallic elements are found on the periodic table
1:22 Nonmetals - where non-metallic elements are found on the periodic table
1:37 Metalloids - where metalloids are found on the periodic table
1:54 Elements are listed in order of increasing atomic number
2:04 Each element has a unique atomic number
2:11 Why elements are organized into columns - periodicity of chemical behavior/ Periodic Law
2:48
Columns are called groups or families - elements in the same group
have similar chemical properties (valence electron configurations)
3:02 7 Rows called Periods - correspond to energy levels
3:15 Alkali metals and alkali Earth metals - s orbitals being filled
3:27 p orbitals being filled on right side of periodic table
3:34 Noble gases have filled valence shell
3:42 Transition metals - d orbitals being filled
3:50 Inner Transition metals - Lanthanides and Actinides - f orbitals being filled
4:09 How Groups are numbered
5:09 Changes to the periodic table
5:24 The first periodic table (in Mendeleev's handwriting)
5:54 The work of Dmitri Mendeleev 1869 - in order of increasing atomic mass
6:07 Lothar Meyer
6:25 Mendeleev left gaps in his table and proposed missing elements
7:14 Henry Moseley modified periodic table - re-ordered by atomic number instead of atomic mass
8:38 92 Naturally occurring elements
8:41 synthesized elements
Our Periodic Table app is FREE in the Google Play store!
http://goo.gl/yg9mAF
Don't miss our other chemistry videos:
https://www.youtube.com/watch?v=aQw9G...
Please Subscribe so you'll hear about our newest videos!
http://bit.ly/1ixuu9W
If you found this video helpful, please give it a "thumbs up" and share it with your friends!
Written and Produced by Kimberly Hatch Harrison
About our instructor:
Kimberly
Hatch Harrison received degrees in Biology and English Literature from
Caltech before working in pharmaceuticals research, developing drugs for
autoimmune disorders. She then continued her studies in Molecular
Biology (focusing on Immunology and Neurobiology) at Princeton
University, where she began teaching as a graduate student. Her success
in teaching convinced her to leave the glamorous world of biology
research and turn to teaching full-time, accepting a position at an
exclusive prep school, where she taught biology and chemistry for eight
years. She is now the head writer and producer of Socratica Studios.
Creative Commons Picture Credits:
Dmitri Mendeleev Periodic Table monument in Saint Petersburg
http://en.wikipedia.org/wiki/File:San...
Author: Heidas
Plasma globe video
http://en.wikipedia.org/wiki/File:Pla...
Author: Colin
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