types:
acide
any of various water-soluble compounds having a sour taste and capable of turning litmus red and reacting with a base to form a salt
alcali
any of various water-soluble compounds capable of turning litmus blue and reacting with an acid to form a salt and water
synthétique
a compound made artificially by chemical reactions
oxyde
any compound of oxygen with another element or a radical
polymère
a naturally occurring or synthetic compound consisting of large molecules made up of a linked series of repeated simple monomers
conservateur
a chemical compound that is added to protect against decay or decomposition
sel
a compound formed by replacing hydrogen in an acid by a metal (or a radical that acts like a metal)
nitrate
any compound containing the nitrate group (such as a salt or ester of nitric acid)
sulfure
a compound of sulphur and some other element that is more electropositive
pâte à modeler
a synthetic material resembling clay but remaining soft; used as a substitute for clay or wax in modeling (especially in schools)
alcaloïde
natural bases containing nitrogen found in plants
présure
a substance that curdles milk in making cheese and junket
ammoniaque
a pungent gas compounded of nitrogen and hydrogen (NH3)
carbonate
a salt or ester of carbonic acid (containing the anion CO3)
acide carbonique
a weak acid known only in solution; formed when carbon dioxide combines with water
neurochimique
any organic substance that occurs in neural activity
acide citrique
a weak water-soluble acid found in many fruits (especially citrus fruits); used as a flavoring agent
dioxyde
an oxide containing two atoms of oxygen in the molecule
H2O,
eau
binary compound that occurs at room temperature as a clear colorless odorless tasteless liquid; freezes into ice below 0 degrees centigrade and boils above 100 degrees centigrade; widely used as a solvent
ester
formed by reaction between an acid and an alcohol with elimination of water
résine
any of a class of solid or semisolid viscous substances obtained either as exudations from certain plants or prepared by polymerization of simple molecules
résine synthétique
a resin having a polymeric structure; especially a resin in the raw state; used chiefly in plastics
hydrocarbure
an organic compound containing only carbon and hydrogen
macromolécule
any very large complex molecule; found only in plants and animals
monoxyde
an oxide containing just one atom of oxygen in the molecule
phénol
any of a class of weakly acidic organic compounds; molecule contains one or more hydroxyl groups
minium
a reddish oxide of lead (Pb3O4) used as a pigment in paints and in glass and ceramics
silice
a white or colorless vitreous insoluble solid (SiO2); various forms occur widely in the earth's crust as quartz or cristobalite or tridymite or lechatelierite
épice
aromatic substances of vegetable origin used as a preservative
stéroïde
any of several fat-soluble organic compounds having as a basis 17 carbon atoms in four rings; many have important physiological effects
sulfate
a salt or ester of sulphuric acid
acide sulfurique
(H2SO4) a highly corrosive acid made from sulfur dioxide; widely used in the chemical industry