Element and atom

Element:a substancesthat 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, wheremost og its mass is.
Electron: a negatively charged particle that moves around an atom´´s nucleus.
Proton: a positively changed particle inside an atom´s nuecleus.
Neutron:a particle with no charged inside an atom´s nucleus.


Atomic numbers: the number of protons in an atom.


Metal:any of a group of element that conduct heat and electricity, is shine and bendable.