1) The central part of an atom that contains protons and neutrons. a) Proton b) Neutron c) Compound d) Nucleus 2) A small particle with a positive charge of +1 and a relative mass of 1. a) Element b) Proton c) Atom d) Compound 3) A small particle with no electronic charge and a relative mass of 1. a) Nucleus b) Electron c) Neutron d) Proton 4) A very tiny particle with a negative charge of -1 and a relative mass close to 0. a) Nucleus b) Proton c) Electron d) Compound 5) Atoms have an overall positive charge. a) True b) False

Bảng xếp hạng

Phong cách trực quan

Tùy chọn

Chuyển đổi mẫu

Bạn có muốn khôi phục tự động lưu: không?