types:
diffusion,
dispersion
(physics) the process in which there is movement of a substance from an area of high concentration of that substance to an area of lower concentration
distillation
the process of purifying a liquid by boiling it and condensing its vapors
feed-back
the process in which part of the output of a system is returned to its input in order to regulate its further output
réaction nucléaire
(physics) a process that alters the energy or structure or composition of atomic nuclei
changement d'état
a change from one state (solid or liquid or gas) to another without a change in chemical composition
absorption
the process in which one substance takes up or holds another (by either absorption or adsorption)
sillage
the flow of air that is driven backwards by an aircraft propeller
absorption
the accumulation of molecules of a gas to form a thin film on the surface of a solid
association
(chemistry) any process of combination (especially in solution) that depends on relatively weak chemical bonding
carie dentaire
soft decayed area in a tooth; progressive decay can lead to the death of a tooth
décoction
(pharmacology) the extraction of water-soluble drug substances by boiling
décomposition
(biology) the process of decay caused by bacterial or fungal action
érosion
(geology) the mechanical process of wearing or grinding something down (as by particles washing over it)
fission,
fission nucléaire
a nuclear reaction in which a massive nucleus splits into smaller nuclei with the simultaneous release of energy
congélation,
gel
the withdrawal of heat to change something from a liquid to a solid
fusion,
fusion nucléaire
a nuclear reaction in which nuclei combine to form more massive nuclei with the simultaneous release of energy
mécanique
the atomic process that occurs during a chemical reaction