Benchmark 5 Vocabulary Practice

Front

protons

Back

positively charged particles found in the nucleus of atoms

Front

neutrons

Back

neutral particles found in the nucleus of atoms

Front

electrons

Back

negatively charged particles found surrounding the nucleus of an atom orbiting in energy levels

Front

atom

Back

a particle that is composed of protons, neutrons, and electrons with a neutral net charge

Front

ion

Back

a charged atom

Front

cation

Back

an atom that has lost electrons and is positively charged

Front

anion

Back

an atom that has gained electrons and is negatively charged

Front

atomic number

Back

the number of protons in an atom, this identifies the element

Front

mass number

Back

the total number of protons and neutrons in the nucleus of an atom

Front

average atomic mass

Back

the average mass of the naturally occurring isotopes of an element