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published by the BBC
This site provides an introduction to the standard model of particle physics, the theory which is currently most widely accepted to describe the structure of matter. All of the elementary particles of matter and the fundamental forces are characterized and classified. The site also provides information about the testing of the standard model.
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Modern Physics
- Elementary Particles
- General
- High School
- Lower Undergraduate
- Informal Education
- Upper Undergraduate
- Reference Material
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- Physical Science
- Physics First
- Conceptual Physics
- Algebra-based Physics
- AP Physics
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© 2002 The BBC
Additional information is available.
Neutrons, Protons, elementary particle, fundamental force, fundamental particle, quarks, standard model
Record Creator:
Metadata instance created December 2, 2007 by Ann Deml
Record Updated:
May 15, 2012 by Lyle Barbato
Last Update
when Cataloged:
December 11, 2008
Other Collections:

AAAS Benchmark Alignments (2008 Version)

4. The Physical Setting

4D. The Structure of Matter
  • 6-8: 4D/M1a. All matter is made up of atoms, which are far too small to see directly through a microscope.
  • 9-12: 4D/H1. Atoms are made of a positively charged nucleus surrounded by negatively charged electrons. The nucleus is a tiny fraction of the volume of an atom but makes up almost all of its mass. The nucleus is composed of protons and neutrons which have roughly the same mass but differ in that protons are positively charged while neutrons have no electric charge.
  • 9-12: 4D/H2. The number of protons in the nucleus determines what an atom's electron configuration can be and so defines the element. An atom's electron configuration, particularly the outermost electrons, determines how the atom can interact with other atoms. Atoms form bonds to other atoms by transferring or sharing electrons.
  • 9-12: 4D/H5. Scientists continue to investigate atoms and have discovered even smaller constituents of which neutrons and protons are made.
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Record Link
AIP Format
(BBC, 2002), WWW Document, (https://www.h2g2.com/approved_entry/A666173).
The Standard Model of Particle Physics (BBC, 2002), <https://www.h2g2.com/approved_entry/A666173>.
APA Format
The Standard Model of Particle Physics. (2008, December 11). Retrieved June 20, 2024, from BBC: https://www.h2g2.com/approved_entry/A666173
Chicago Format
BBC. The Standard Model of Particle Physics. BBC, December 11, 2008. https://www.h2g2.com/approved_entry/A666173 (accessed 20 June 2024).
MLA Format
The Standard Model of Particle Physics. BBC, 2002. 11 Dec. 2008. 20 June 2024 <https://www.h2g2.com/approved_entry/A666173>.
BibTeX Export Format
@misc{ Title = {The Standard Model of Particle Physics}, Publisher = {BBC}, Volume = {2024}, Number = {20 June 2024}, Month = {December 11, 2008}, Year = {2002} }
Refer Export Format

%T The Standard Model of Particle Physics %D December 11, 2008 %I BBC %U https://www.h2g2.com/approved_entry/A666173 %O text/html

EndNote Export Format

%0 Electronic Source %D December 11, 2008 %T The Standard Model of Particle Physics %I BBC %V 2024 %N 20 June 2024 %8 December 11, 2008 %9 text/html %U https://www.h2g2.com/approved_entry/A666173

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