Showing 1-10 of 10 assets

How Atoms Bond: Ionic Bonds

Date : 01/10/2012

Clip Length : 00:06:28

This NBC Learn video uses common table salt to explain and illustrate what happens between the electrons and protons in atoms of the element sodium and atoms and the element chlorine to make crystals of sodium chloride.

How Atoms Bond: Ionic Bonds
Chemistry of Salt (NaCl)

Date : 12/22/2011

Clip Length : 00:06:23

This NBC Learn video explains and illustrates the molecular structure of sodium chloride (NaCl) crystals; the structure and symmetry of crystal lattices; and why one crystalline solid, salt, melts another, ice.

Chemistry of Salt (NaCl)
The Chemical Bond Between Cloves and Nutmeg

Date : 01/28/2011

Clip Length : 00:04:07

This NBC Learn video focuses on chemical bonds by profiling eugenol and isoeugenol, two molecules with identical molecular structures except for the placement of one double bond -- a difference that makes eugenol responsible for the flavor and aroma of cloves, and isoeugenol responsible for the taste and smell of nutmeg.

The Chemical Bond Between Cloves and Nutmeg
First-Ever Image of a Molecule (Million Times Smaller Than Grain of Sand)

Date : 08/31/2009

Clip Length : 00:00:33

In the summer of 2009, researchers at IBM release the first-ever image of a single molecule--a million times smaller than a grain of sand.

First-Ever Image of a Molecule (Million Times Smaller Than Grain of Sand)
Watching the electrons, and chemistry in motion

Date : 08/04/2010

Clip Length : 1

This August 2010 Scientific American article reports on the first real-time observation of electrons in the outermost layer of krypton atoms, a breakthrough that may allow eventual observations of exactly how chemical bonds break and form to make molecules and compounds. Source: Scientific American, August 4, 2010

Watching the electrons, and chemistry in motion
Observing Orbitals

Date : 09/20/1999

Clip Length : 2

This 1999 Scientific American article reports on the first true images, made at Arizona State University, of atomic orbitals of electrons as they move around the nuclei in atoms. The images confirm theories that copper atoms in copper oxides might form covalent, and not only metal-to-metal bonds. Source: Scientific American, September 20, 1999

Observing Orbitals
How are elements broken down into protons, electrons and neutrons?

Date : 09/28/1998

Clip Length : 2

This short article from the September 1998 issue of Scientific American outlines the basic structure and components of an atom -- including the nucleus, protons, neutrons and electrons -- and how atoms can be 'disassembled.' Source: Scientific American, September 28, 1998

How are elements broken down into protons, electrons and neutrons?
John Dalton: Chemical Atoms and Their Combinations (1808)

Date : 01/01/1808

Clip Length : 1

Illustration of chemical atoms and their combination, from pages of "A New System of Chemical Philosophy," by John Dalton. (1808-27) From the Rare Book collections of the Chemical Heritage Foundation, Roy G. Neville Historical Chemical Library

John Dalton: Chemical Atoms and Their Combinations (1808)
Periodic Table of the Elements (NIST, 2003)

Date : 09/01/2003

Clip Length : 1

A Periodic Table of the Elements, designed by the National Institute of Standards and Technology, showing atomic properties of the elements. Source: NIST (2003)

Periodic Table of the Elements (NIST, 2003)
Atoms, Elements, Isotopes (NASA Genesis Mission Teacher Resource)

Date : 01/10/2012

Clip Length : 10

This education module contains teacher background information and resources on atoms, elements and isotopes. Developed by educators at Mid-Continent Research for Education and Learning in conjunction with NASA's Genesis Mission. (The Genesis spacecraft is to return samples of solar wind particles and oxygen isotopes for study.)

Atoms, Elements, Isotopes (NASA Genesis Mission Teacher Resource)

Showing 1-10 of 10 assets

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