Chemistry: Introduction to isotopes and atomic structure
Ανέβηκε στις 29 Ιουλ 2009
http://www.mindbites.com/series/449
for a bundle of videos on Atomic Structure. For an even broader bundle
of videos that cover Atomic Structure and Atoms, Molecules, and Ions,
check out http://www.mindbites.com/series/448 .
To
search for topic-specific help in our library of 400+ video products
for Chemistry, please refer to our Chemistry category at: http://www.mindbites.com/category/24-... .
To check out our full Chemistry video course, with 300+ videos included, refer to: http://www.mindbites.com/series/549-c... .
Or, for access to this single video, go to: http://www.mindbites.com/lesson/1290 .
Professor
Harman explains isotopes and atomic mass in this lesson covering atomic
structure. Most elements exist in nature as more than one isotope.
Isotopes are atoms that have the same number of protons as the element
but a different number of neutrons. The number of protons always remains
the same, as this number (also known as the atomic number) is what
determines the element. Prof. Harman also introduces atomic mass units,
or amu's, which are a more convenient unit for describing the very small
masses of atoms. Next, Professor Harman explains more about the masses
of elements. The amu is derived from carbon 12 and is equal to 1.6605 x
10^-27. The relative atomic mass listed on the periodic table of the
elements is a weighted average of the masses of the isotopes of an
element. You might also observe that the mass of an isotope is less than
the sum of masses of its nucleons and electrons. Professor Harman
explains the relationship between mass and energy that Einstein
discovered, and binding energy.
Taught by Professor Harman, this lesson was selected from a broader, comprehensive course, Chemistry.
Dean
Harman is a professor of chemistry at the University of Virginia, where
he has been honored with several teaching awards. He heads Harman
Research Group, which specializes in the novel organic transformations
made possible by electron-rich metal centers such as Os(II), RE(I), AND
W(0). He holds a Ph.D. from Stanford University.
for a bundle of videos on Atomic Structure. For an even broader bundle
of videos that cover Atomic Structure and Atoms, Molecules, and Ions,
check out http://www.mindbites.com/series/448 .
To
search for topic-specific help in our library of 400+ video products
for Chemistry, please refer to our Chemistry category at: http://www.mindbites.com/category/24-... .
To check out our full Chemistry video course, with 300+ videos included, refer to: http://www.mindbites.com/series/549-c... .
Or, for access to this single video, go to: http://www.mindbites.com/lesson/1290 .
Professor
Harman explains isotopes and atomic mass in this lesson covering atomic
structure. Most elements exist in nature as more than one isotope.
Isotopes are atoms that have the same number of protons as the element
but a different number of neutrons. The number of protons always remains
the same, as this number (also known as the atomic number) is what
determines the element. Prof. Harman also introduces atomic mass units,
or amu's, which are a more convenient unit for describing the very small
masses of atoms. Next, Professor Harman explains more about the masses
of elements. The amu is derived from carbon 12 and is equal to 1.6605 x
10^-27. The relative atomic mass listed on the periodic table of the
elements is a weighted average of the masses of the isotopes of an
element. You might also observe that the mass of an isotope is less than
the sum of masses of its nucleons and electrons. Professor Harman
explains the relationship between mass and energy that Einstein
discovered, and binding energy.
Taught by Professor Harman, this lesson was selected from a broader, comprehensive course, Chemistry.
Dean
Harman is a professor of chemistry at the University of Virginia, where
he has been honored with several teaching awards. He heads Harman
Research Group, which specializes in the novel organic transformations
made possible by electron-rich metal centers such as Os(II), RE(I), AND
W(0). He holds a Ph.D. from Stanford University.
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- Τυπική άδεια YouTube
- ANAΡΤΗΣΗ ΑΠΟ ΤΟ YOUTUBE 26/9/2014
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