Classroom Resource

The Electron: Crash Course Chemistry #5

Subject Area

Science

Grade(s)

9, 10, 11, 12

Overview

In this video, Hank brings us the story of the electron. He describes how reality is a kind of music, discussing electron shells and orbitals, electron configurations, ionization and electron affinities, and how all these things can be understood via the periodic table.

Science (2015) Grade(s): 09-12 - Chemistry

SC15.CHM.1

Obtain and communicate information from historical experiments (e.g., work by Mendeleev and Moseley, Rutherford’s gold foil experiment, Thomson’s cathode ray experiment, Millikan’s oil drop experiment, Bohr’s interpretation of bright line spectra) to determine the structure and function of an atom and to analyze the patterns represented in the periodic table.

Unpacked Content

UP:SC15.CHM.1

Vocabulary

  • Atomic theory
  • Periodic table history
  • Macroscopic level
  • Atomic/ molecular/ particulate level

Knowledge

Students know:
  • Examples of scientists and scientific discoveries that changed our knowledge of atomic structure.
  • How these scientific discoveries relate to the information found on the periodic table.
  • Each atom has a charged substructure that consists of a nucleus, which is made of protons and neutrons, surrounded by electrons.
  • The periodic table orders elements horizontally by the number of protons in the atom's nucleus and places those with similar properties in columns.

Skills

Students are able to:
  • Obtain information from multiple, grade-level appropriate materials (text, media, visual displays, data).
  • Communicate information from a variety of reliable sources in multiple formats (oral, graphical, textual, and/or mathematical).

Understanding

Students understand that:
  • It is important to gather, read, and synthesize information from multiple appropriate sources and assess the credibility, accuracy, and possible bias of each publication and methods used.
  • Our knowledge of the structure and function of the atom changed over time due to scientific discoveries, and the history of the periodic table traces our understanding of the atom.
  • Macroscopic patterns are related to the nature of atomic/ molecular/ particulate level structure.

Scientific and Engineering Practices

Obtaining, Evaluating, and Communicating Information

Crosscutting Concepts

Structure and Function
Science (2015) Grade(s): 09-12 - Chemistry

SC15.CHM.3

Use the periodic table as a systematic representation to predict properties of elements based on their valence electron arrangement.

Unpacked Content

UP:SC15.CHM.3

Vocabulary

  • Protons
  • Neutrons
  • Nucleus
  • Electrons
  • Valence
  • Main group elements
  • Properties
  • Atoms
  • Elements
  • Periods/ Rows
  • Groups/ Families/ Columns
  • Atomic/ molecular level
  • Macroscopic level
  • Periodic trends
  • metal/ nonmetal/ metalloid behavior
  • electrical/ heat conductivity
  • electronegativity
  • electron affinity
  • ionization energy
  • atomic-covalent/ ionic radii
  • Molecular modeling
  • Lewis dot
  • 3-D ball-and-stick
  • space-filling
  • VSEPR
  • Types of bonds
  • ionic bonds
  • covalent/ molecular bonds
  • metallic bonds
  • Molecular shapes
  • Ions
  • Ionic compounds
  • Covalent/ molecular compounds

Knowledge

Students know:
  • The atom has a positively-charged nucleus, containing protons and neutrons, surrounded by negatively-charged electrons.
  • The periodic table can be used to determine the number of particles in an atom of a given element.
  • The relationship between the arrangement of main group elements on the periodic table and the pattern of valence electrons in their atoms.
  • The relationship between the arrangement of elements on the periodic table and the number of protons in their atoms.
  • The trends in relative size, reactivity, and electronegativity in atoms are based on attractions of the valence electrons to the nucleus.
  • The number and types of bonds formed (i.e. ionic, covalent, metallic) by an element and between elements are based on the arrangement of valence electrons in the atoms.
  • The shapes of molecules are based on the arrangement of valence electrons in the atoms.
  • The rules for naming chemical compounds are based upon the type of bond formed.
  • The number and charges in stable ions that form from atoms in a group of the periodic table are based on the arrangement of valence electrons in the atoms.

Skills

Students are able to:
  • Predict relative properties of elements using the periodic table.
  • Predict patterns in periodic trends based on the structure of the atom.
  • Predict patterns in bonding and shape based on the structure of the atom.
  • Use the periodic table to determine how elements will bond.

Understanding

Students understand that:
  • Models are based on evidence to illustrate the relationships between systems or between components of a system.
  • Each atom has a charged substructure consisting of a nucleus, which is made of protons and neutrons, surrounded by electrons.
  • The periodic table arranges elements into periods/ rows by the number of protons in the atom's nucleus.
  • Elements with similar properties are placed into groups/ families/ columns based on the repeating pattern of valence electrons in their atoms.
  • Attraction and repulsion between electrical charges at the atomic scale explain the structure, properites, and transformations of matter, as well as the contact forces between material objects.
  • The attraction and repulsion of charged particles in the atom creates patterns of properties of elements.
  • The arrangement of valence electrons in an atom also creates patterns of properties of elements.
  • Elements form bonds based upon their valence electron arrangement.
  • Chemical compounds are named based upon the type of bonds formed by their constituent atoms/ ions.
  • Different patterns may be observed at the atomic/ molecular level and the macroscopic level.

Scientific and Engineering Practices

Developing and Using Models; Analyzing and Interpreting Data

Crosscutting Concepts

Patterns; Systems and System Models; Structure and Function
Link to Resource
https://aptv.pbslearningmedia.org/resource/be7164ef-6d9f-46fe-9865-5d3907487c94…

CR Resource Type

Audio/Video

Resource Provider

PBS
Accessibility

Accessibility

Video resources: includes closed captioning or subtitles
License

License Type

Custom

Custom License Type (URL)

https://www.pbs.org/about/about-pbs/terms-of-use/

Comments or Notes

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Approved Date

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