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One of the two mirror-image forms of an optically active molecule.

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    The scanning tunneling microscope (STM) invented by Heinrich Rohrer and Gerd Binnig in the 1980s still manages to do a great job today and competes with more advanced microscope types. The scanning tunneling microscope is used for studying the surface atoms that are found on various materials. The...



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Associated Ions

Short-lived species formed by the collision of dissolved ions of opposite charges.

Ferromagnetism

The ability of a substance to become permanently magnetized by exposure to an external magnetic field.

xanthene dye

Any of a group of dyes having a molecular structure related to that of xanthene in which the aromatic (C6H4) groups are the chromophore.

 

Physical Change

A change in which a substance changes from one physical state to another but no substances with different composition are formed. Example Gas to Liquid - Solid.

 

Boyle's Law

At constant temperature the volume occupied by a definite mass of a gas is inversely proportional to the applied pressure.

Metathesis Reactions

Reactions in which two compounds react to form two new compounds, with no changes in oxidation number. Reactions in which the ions of two compounds exchange partners.

 

Overlap

The interaction of orbitals on different atoms in the same region of space.

Alkaline Battery

A dry cell in which the electrolyte contains KOH.

Coefficient of expansion

The ratio of the change in length or volumen of a body to the original lengthor volume for a unit change in temperature.

Single Bond

Covalent bond resulting from the sharing of two electrons (one pair) between two atoms.