Element Builder
The Basic Unit of Matter
Atom
a negatively charged particle that moves around the nucleus
Electron
a positively charged particle located in the nucleus of an atom.
Proton
an atom or molecule that has an electrical charge because it has gained or lost electrons.
Ion
a particle with no charge located in the nucleus of an atom
Neutron
the positively charged, dense center of an atom
Nucleus
the number of protons plus neutrons in the nucleus of an atom.
Mass Number
the number of protons in the nucleus of an atom
Atomic Number
a pure substance that cannot be broken down into simpler substances by ordinary chemical means
Element
capable of releasing radiation
one of several forms of the same element
Isotope
a chart that organizes the chemical elements based on their properties
Periodic Table
electrons found in the outermost energy level of an atom
Valence Electrons
a diagram that shows the element symbol surrounded by dots representing valence electrons.
Electron Dot Diagram
a particular region where electrons can orbit a nucleus.
Energy Level