Elements and Atoms

Elements and Atoms

Element: a substance that cannot be broken down any futher into anything simpler.

Atom: the smallest particle of an element that has the same chemical properties.

 Nucleus: an atom's dense center, where most of it mass is.

Electron: a negatively charged particle that moved around an atom's nucleus.

 Proton: a positively charged particle inside an atom's nucleus. 

Neutron: a particle with no charge 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 electricity, is shiny and bendable.