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A substance whose aqueous solutions do not conduct electricity.

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    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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    Metals have been used by people since ancient times. All the time the process of obtaining them was improved, useful alloys of various metals appeared. Let’s look at interesting facts about metals.

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Molecular Orbital Theory

A theory of chemical bonding based upon the postulated existence of molecular orbitals.

Double Salt

Solid consisting of two co-crystallized salts.

 

Essential Oil

A plant extract that has a distinctive odour or flavour.

Kinetic-molecular Theory

A theory, that attempts to explain macroscopic observations on gases in microscopic observations on gases in microscopic observations on gases in microscopic or molecular terms.

Capillary

A tube having a very small inside diameter.

Octane Number

A number that indicates how smoothly a gasoline burns.

Dosimeter

A small, calibrated electroscope worn by laboratory personnel and designated to detect and measure incident ionizing radiation or chemical exposure.

Liquid Aerosol

Colloidal suspension of liquid in gas.

Line Spectrum

An atomic emission or absorption spectrum.

Salinometer

An instrument for measuring the amount of salt in a solution. Also,"salimeter, salometer."