Theory that accounts for the bonding and properties of metallic solids.
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What are Compound Microscopes?
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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The most expensive metal in the world
Do you think the most expensive metal is gold? No! On earth there are more valuable metals. But we need to divide the value of metals that occur in nature, and metals - isotopes, which are obtained in special laboratories. Let’s look at natural metals first.
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Features of the Scanning Tunneling Microscope
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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Creating Malachite egg
One of the most interesting and obvious chemical experiments is the experiment on the interaction of copper sulfate and calcium carbonate. The latter is contained in the shell of a simple egg, but copper sulphate should be searched in a chemical reagent store. This experience is simple, but...
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Varieties of garnet minerals
The most famous type of garnet stone is pyrope (flaming). This is the "oldest of garnets", with a dense red color, similar to the grain of an edible garnet. Pyrope has a variety called rhodolite - a stone of dense pink or pink-purple color, which sometimes has the alexandrite effect and is used in...
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Ionic Geometry
The arrangement of atoms (not lone pairs of electrons) about the central atom of a polyatomic ion.
Extensive Property
A property that depends upon the amount of material in a sample.
Ionization Isomers
Isomers that result from the interchange of ions inside and outside the coordination sphere.
Amorphous Solid
A noncrystalline solid with no well-defined ordered structure.
Precipitate
An insoluble solid formed by mixing in solution the constituent ions of a slightly soluble solution.
Diamonds Are Forever
Diamonds are still a girl's best friend, right? We love the shiny gems. They are the most popular rocks sold today. But what exactly are they, anyway? Where do they come from? What else are they used for?
Colligative Properties
Physical properties of solutions that depend upon the number but not the kind of solute particles present.
Boiling Point Elevation
The increase in the boiling point of a solvent caused by the dissolution of a nonvolatile solute.
Metallic Conduction
Conduction of electrical current through a metal or along a metallic surface.
Aufbau ('building up') Principle
Describes the order in which electrons fill orbitals in atoms.
