Forces between individual particles (atoms, molecules, ions) of a substance.
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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...
Discovered : known to ancient civilisations
Origin : The name is derived from 'Cuprum', the Latin name for Cyprus.
The temperature above which a gas cannot be liquefied, the temperature above which a substance cannot exhibit distinct gas and liquid phases.
At the same temperature and pressure, equal volumes of all gases contain the same number of molecules.
Integral number of protons in the nucleus, defines the identity of element.
The mass of one formula unit of a substance in atomic mass units.
A chemical or compound that causes a sudden, almost instantaneous release or pressure, gas, heat and light when subjected to sudden shock, pressure, high temperature or applied potential.
The rates of effusion of gases are inversely proportional to the square roots of their molecular weights or densities.
Solution in which no more solute will dissolve.
A binary compound in which H is bonded to one or more of the more electronegative nonmetals.
The amount of heat required to raise the temperature of one gram of substance one degree Celsius.
Mixing of metal with other substances (usually other metals) to modify its properties.
Classification of liquid substances that will burn on the basis of flash points. A combustible liquid means any liquid having a flash point at or above 37.8°C (100°F) but below 93.3°C (200°F), except any mixture having components with flash points of 93.3°C (200°F) or higher, the total of which makes up 99 percent or more of the total volume of the mixture.
Colloidal suspension of liquid in gas.
A colorless, crystalline compound, XeF6, that melts at 50°C to a yellow liquid, and boils at 75°C.
The number of repeating corresponding points on a wave that pass a given observation point per unit time.
Isomers involving exchanges of ligands between complex cation and complex anion of the same compound.
The solvent-like phase in a colloid.
Ytterbia is a colorless compound, Yb2O3, used in certain alloys and ceramics. Also known as ytterbium oxide.
A binary compound of oxygen.
A protein that acts as a catalyst in biological systems.