Periodic Table Vocab

the subatomic particle of an atom that is always negative

• proton

• neutron

• electron

• positron

a classification of elements that are poor conductors, are brittle, are dull, are usually colorful or colorless, have a low melting point, and are insulators

• metals

• nonmetals

• metalloids

• conductors

the horizontal rows of the periodic table

• groups

• families

• periods

• blocks

a diagram of elements arranged in periods and groups based on characteristics of the elements

• periodic table

• element chart

• atomic structure diagram

• chemical formula

spanning from left to right

• vertical

• diagonal

• horizontal

• perpendicular

what about an element can tell you how many protons it has in its nucleus?

• the atomic mass

• the atomic number

• the mass number

• the electron configuration

the subatomic particle of an atom that is always neutral

• proton

• electron

• neutron

• positron

what about an element can tell you how many electrons it has in its electron cloud?

• the atomic number

• the mass number

• the number of protons

• the atomic weight

what particle determines the identity of an atom?

• neutron

• electron

• proton

• photon

the number located at the bottom of an element

• atomic mass

• atomic number

• mass number

• molar mass