6.5A&B Elements in Earth Vocabulary

a chart where all the elements are organized into periods and groups according to their properties

• element

• periodic table of elements

• atom

• atomic mass

A pure substance made of only one kind of atom and cannot be broken down into other/simpler substances.

• element

• atomic mass

• atomic mass

• periodic table of elements

the building block of all matter; the smallest particle of an element.

• atomic mass

• element

• periodic table of elements

• atom

the weighted average of the masses of the isotopes of an element

• atomic mass

• atom

• chemical symbol

• atomic number

the number of protons in an atom

• chemical symbol

• group

• atomic number

• period

the abbreviation of an element's name; 1 or 2 letters, first letter is always capitalized, second is never capitalized

• group

• period

• chemical symbol

• atomic number

vertical column in the periodic table (18)

• atomic number

• group

• period

• metal

a horizontal row of elements in the periodic table (7)

• metal

• period

• metalloid

• nonmetal

elements with physical properties that include shininess, malleability, ductility, and conductivity.

• nonmetal

• metalloid

• metal

• compound

elements that have some properties of both metals and nonmetals.

• metalloid

• metal

• nonmetal

• compound