Вставьте вместо пропущенных точек слова ниже. let us begin by saying that anything man about the atom today might be changed tomorrow. science constantly new things about the atom as atom-smashing machines the word "atom" comes from greeks an atom to be the possible particle of any substance. yet today we more than 20 different particles in the core of the atom! scientists believe the atom of electrons ,protons ,neutrons,positrons,neutrino,mesons and hyperons . how all these particles together to make up the atom still to us. know learn build think small find make hold not know

Urjdifk135    1   02.09.2019 18:20    2