Understanding Atomic Theory

Front

Atom

Back

Smallest unit of matter, retains properties of an element

Front

Nucleus

Back

Dense center of an atom, contains protons and neutrons

Front

Electron

Back

Negatively charged particle, orbits the nucleus

Front

Proton

Back

Positively charged particle, found in the nucleus

Front

Neutron

Back

Neutral particle, found in the nucleus

Front

Atomic Number

Back

Number of protons in an atom's nucleus

Front

Mass Number

Back

Total number of protons and neutrons in an atom

Front

Isotope

Back

Atoms of the same element, different mass numbers

Front

Electron Cloud

Back

Region around nucleus, where electrons are likely found

Front

Orbital

Back

Specific region where an electron is likely to be found