Скачать или смотреть Nuclear Chemistry: Isotopes, Nuclear Structure, Radioactivity, Nuclear Decay, and Half-Life

This video discusses the concepts of atomic isotopes, nuclear and subnuclear structure, radioactivity and nuclear decay, and half-life. The content is largely conceptual, but calculations involving average atomic mass and half-life are shown.

The video includes:
Review of the atomic structure: differentiation between the atomic nucleus and electron probability regions surrounding it
Discussion and implications of isotopes sharing the same atomic identity but displaying varying properties reflective of differing mass values
Differentiation between isotopic mass values and the prudence of weighted average atomic mass displayed on the periodic table
Weighted average atomic mass formula and practice problems
Isotopic stability represented by the band of stability
Explanation of the concept that different ratios of neutrons to protons in atomic nuclei create nuclear instability and radioactivity
Introduction to nuclear structure as a nuclide in terms of nucleonic states
Basic explanation of the strong nuclear force, the strong force, and the weak interaction as they pertain to atomic nuclei
Visualization of nuclear structure as pion exchange between nucleons; visualization of nucleon structure as gluon exchange between quarks; explanation of nucleons' charge in terms of quark charges
Introduction to common notation in nuclear equations
Definition of radioactivity, nuclear fission and fusion
Introduction to common modes of nuclear decay in terms of all emitted particles (necessity of electron neutrinos and antineutrinos)
Elaboration on alpha decay, the definition of an alpha particle
Elaboration on beta plus and beta minus decays in terms of weak W bosons, quark transmutation, and beta plus and minus particles
Introduction to metastability and application to gamma emission
Elaboration on nuclear electron capture (quark transmutation) and neutron radioactivity
Extended list of other rare modes of nuclear decay; brief description of nuclear isomers and internal conversions
Nuclear equation balance and identification practice problems
Discussion of prudence, meaning, and implications of nuclear decay chains for isotopes approaching stability
Application of nuclear reactions outside of single-decay contexts (in decay chains)
Nuclear decay chain expression and interpretation practice problem
Introduction to isotopic half-life; explanation that isotopes have extensive variance in their half-life and that nuclear decay is not a uniform process with respect to time
Differentiation between mechanisms of nuclear decay and the quantification of time that describe the timeframe of decay
Half-life equation and application practice problems

Practice problems on the final five slides reflect the content discussed throughout the course of the video. Concepts reviewed include:
Weighted average atomic mass calculation and elemental and isotopic identification
Vocabulary and concept review with respect to nuclear and subnuclear structure, relevant forces, and relevant particles
Nuclear equation writing from a given prompt including all particle emissions; balancing of nuclear equations
Expression of a decay series given a starting isotope, decay modes, and endpoint
Half-life calculations from a given scenario utilizing direct substitution into and manipulation of provided half-life equation

Errors in notation or verbalization are corrected by in-video text edits. This video is not comprehensive and is intentionally largely conceptual in nature. It is intended to be a suitable introduction to Nuclear Chemistry and calculations are entirely algebra-based.