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A natural deposit containing a mineral of an element to be extracted.

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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...

  • Gas of rotten eggs

    If you happen to break a rotten egg, then you know the smell of hydrogen sulfide, because the stench of the spoiled egg depends on of its presence in rotting protein substances.

  • Ozone

    We breathe 24 hours a day, 7 days a week, consuming about 25 kg of air every day. It turns out that we practically predetermine our health by the air we breathe.

  • 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...

  • 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...



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Complex Ions

Ions resulting from the formation of coordinate covalent bonds between simple ions and other ions or molecules.

Ferromagnetism

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

Heat

A form of energy that flows between two samples of matter because of their differences in temperature.

Coordination Compound or Complex

A compound containing coordinate covalent bonds.

Primary Standard

A substance of a known high degree of purity that undergoes one invariable reaction with the other reactant of interest.

Hydration Energy

The energy change accompanying the hydration of a mole of gase and ions.

Explosive limits

The range of concentrations over which a flammable vapour mixed with proper ratios of air will ignite or explode if a source of ignitions is provided.

Pauli Exclusion Principle

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

Covalent Compounds

Compounds containing predominantly covalent bonds.

Specific Gravity

The ratio of the density of a substance to the density of water.