Elements and Atoms

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 a the
elememt.
Nucleus: an atom's dense center, where most
of the its mass is.
Electron: a negatively charged particle that
moves around an atom's nucleus.
Proton: a positevely 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 group of elements that
conducta heat and electricity, is shiny
abd benable.