Vocabulary #2

Element: a subtance that cannot be broken down any further into anything simpler

atom: the smallest particle of an element that has the same chemical properties as the element

nucleus: an atom's dense center, where most of its mass is

electorn: a negatively charged particle that moves around an atom's nucleus

proton: a positively charged particle inside an atom´s nucleus

neutron: a particle inside an atom's nucleus

atomic number: the number of protons in an atom

metal: any of a group of elements that conduct heat and elctricity, is shiny and bendable