20 фев 1805 г. - Dalton - 1805
Описание:
Dalton concluded that elements are made of extremely small particles called atoms. Atoms of a given element are identical in size, mass, and other properties; atoms of different elements differ in size, mass, and other properties. Atoms cannot be subdivided, created, or destroyed.Добавлено на ленту времени:
Дата:
20 фев 1805 г.
Сейчас
~ 220 г назад