Modern Chemists (9 янв 1600 г. – 9 май 2018 г.)
Описание:
Modern chemists started to break down substances to find new elements. Modern chemists have discovered that atoms are a group of protrons and neutrons collected in the middle of the atom with elecctons surronding it the atom is mostly empty space.Добавлено на ленту времени:
Дата:
9 янв 1600 г.
9 май 2018 г.
~ 418 years