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Structure of an Atom

atom smallest piece of matter
protons particles with an electrical charge - A positively charged subatomic particle.
neutrons neutral particles with no electrical charge
atomic number causes each element to be unique and different from other elements
periodic Table elements are placed in order by increasing atomic number
electrons a negatively charged subatomic particle.
atomic mass the weighted average mass of the isotopes of that element
nucleus the tiny central core of an atom and is composed of protons and neutrons
mass number the total number of protons and neutrons in an atom
charge on a proton +1
charge on an electron -1
charge of an neutron none
location of protons inside the nucleus
location of electrons outside the nucleus
element an substance that cannot be broken down into other substances by physical or chemical means
amu atomic mass unit
importance of proton determines atom's identity
importance of electron determines reactivity or how atoms interact with each other
importance of neutron holds protons/nucleus together
properties that can be used to compare protons, electrons and neutro charges, mass, and location
the difference between two isotopes of the same element isotopes of an element has the same atomic number but differ in mass because they have different number of neutrons
the three subatomic particles protons, neutrons and electrons
Created by: pevans89