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Decomposition by heating a substance in the presence of a catalyst and in the absence of air.

 

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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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    Most of the microscopes used today are compound. A compound microscope features two or more lenses. A hollow cylinder called the tube connects the two lenses. The top lens, the one people look through, is called the eyepiece. The bottom lens is known as the objective lens. Below the two lenses is...



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ytterbia

Ytterbia is a colorless compound, Yb2O3, used in certain alloys and ceramics. Also known as ytterbium oxide.

Chemistry of the sky

Chemistry can teach us about the composition of celestial bodies and determine their age.

Geiger counter

A gas filled tube which discharges electriaclly when ionizing radiation passes through it.

Tyndall Effect

The scattering of light by colloidal particles.

Periodic Law

The properties of the elements are periodic functions of their atomic numbers.

D-Orbitals

Beginning in the third energy level, aset of five degenerate orbitals per energy level, higher in energy than s and p orbitals of the same energy level.

 

Enthalpy

The heat content of a specific amount of substance, defined as E= PV.

Alpha (a) Particle

Helium ion with 2+ charge, an assembly of two protons and two neutrons.

Linear Accelerator

A device used for accelerating charged particles along a straight line path.

Salicylaldehyde

An oily, slightly water-soluble liquid, C7H6O2, having an almondlike odor: used chiefly in perfumery and in the synthesis of coumarin.