Elements and Atoms

Element: a substance 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 atoms dense center, where most of its mass is.


Electron: a negatively charged particle that moves around an atoms nucleus.

Proton: a positively charged particle inside an atoms nucleus.


Neutron: a particle with no charge inside an atoms 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.