Front

Matter made of one kind of atom.

Back

Element

Front

Top number of an element is its ________.

Back

Atomic Number

Front

Atoms of the same element with different neutrons.

Back

Isotope

Front

Protons + Neutrons.

Back

Mass Number

Front

Weighted average mass of isotopes of an element.

Back

Atomic Mass

Front

Shiny or metallic luster; good conductors of heat and electricity.

Back

Metals

Front

Elements that are usually dull in appearance.

Back

Nonmetals

Front

Elements with metal and nonmetal traits.

Back

Metalloids

Front

Matter with uniform composition and properties

Back

Substance

Front

Substance with atoms of multiple elements bonded together.

Back

Compound