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Sand, rock, and other impurities surrounding the mineral of interest in an ore.

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  • Harmful Chemicals Found In Food

    It's getting close to New Years and many people are starting to think about how to lose those extra pounds they managed to gain over the holidays. There are many sorts of diets and fads that have developed over the years from cutting carbs to cutting protein. Everyone has their own opinion as to...

  • 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.

  • 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...

  • Use of diamonds

    Diamond is a crystalline modification of pure carbon formed in the deep interior of the Earth, in the upper mantle at depths of more than 80-100 kilometers, at exceptionally high pressure and temperature. It is the most precious stone, the hardest and most wear-resistant mineral, the most...

  • 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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Gangue

Sand, rock, and other impurities surrounding the mineral of interest in an ore.

Transition State Theory

Theory of reaction rates that states that reactants pass through high-energy transition states before forming products.

Cis-Trans Isomerism

A type of geometrical isomerism related to the angles between like ligands.

Heterogeneous Mixture

A mixture that does not have uniform composition and properties throughout.

Heat of Vaporization

The amount of heat required to vaporize one gram of a liquid at its boiling point with no change in temperature. Usually expressed in J/g. The molar heat of vaporization is the amount of heat required to vaporize one mole of liquid at its boiling point with no change in temperature and usually expressed ion kJ/mol.

Evaporization

Vaporization of a liquid below its boiling point.

Dissociation

In aqueous solution, the process in which a solid ionic compound separates into its ions.

Band of Stability

Band containing nonradioactive nuclides in a plot of number of neutrons versus atomic number.

Pauli Exclusion Principle

No two electrons in the same atom may have identical sets of four quantum numbers.

Oxide

A binary compound of oxygen.