proton, positively charged particle, neutron, particle with no charge, electron, negatively charged particle, atom, smallest part of matter, energy level, holds certain amounts of electrons, Nucleus, Always positive, Nucleus, Where all the mass is found, Proton, Is big, Electron, Is very small, Neutron, Is big

リーダーボード

表示スタイル

オプション

テンプレートを切り替える

自動保存: を復元しますか?