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The unit used to express dipole moments.

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Coefficient of expansion

The ratio of the change in length or volumen of a body to the original lengthor volume for a unit change in temperature.

Graham's Law

The rates of effusion of gases are inversely proportional to the square roots of their molecular weights or densities.

How to make crystal glass

From history we know that the idea of creating crystal belongs to the British: they were the first to add lead oxides to the charge material, and as a result got glass with unusual “voice”, transparency and sparkling faces. Classical crystal contains 24% of lead oxide, but there are products with a higher content of up to 30%.

Electrophoresis

A technique for separation of ions by rate and direction of migration in an electric field.

Heterogeneous Mixture

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

Binary Compound

A compound consisting of two elements, may be ionic or covalent.

Manometer

A two-armed barometer.

Entropy

A thermodynamic state or property that measures the degree of disorder or randomness of a system.

Polymer

A large molecule consisting of chains or rings of linked monomer units, usually characterized by high melting and boiling points.

Law of Conservation of Energy

Energy cannot be created or destroyed, it may be changed from one form to another.