the science of matter; the branch of the natural sciences dealing with the composition of substances and their properties and reactions

物質の科学; 物質の組成、性質、および反応を扱う自然科学の分野

become converted into ions

イオンに変換される

convert into ions

イオンに変換する

(physical chemistry) a sample of matter in which substances in different phases are in equilibrium

（物理化学）異なる相にある物質が平衡状態にある物質のサンプル

(physical chemistry) a fourth state of matter distinct from solid or liquid or gas and present in stars and fusion reactors; a gas becomes a plasma when it is heated until the atoms lose all their electrons, leaving a highly electrified collection of nuclei and free electrons

固体、液体、気体とは異なる四番目の物質状態で、星や融合反応炉に存在する。気体が加熱されて原子が全ての電子を失い、非常に電気を帯びた原子核と自由電子の集合体になるとプラズマになる

(physical chemistry) the pressure exerted by a solution necessary to prevent osmosis into that solution when it is separated from the pure solvent by a semipermeable membrane

（物理化学）半透膜によって純溶媒と分離されたとき、溶液に浸透を防ぐために必要な圧力