3.2 Elements

Front 1

element

Back 1

naturally occuring or synthetic material that cannot be broken down to unique set of properties and that is generally classified as a metal, a metaloid or nonmetal.

Front 2

atomic number

Back 2

whole number that tells how many protons are in the nucleus of each atom of an element.

Front 3

atomic mass

Back 3

number that tells how heavy an element's atom are compared with atoms of other elements.

Front 4

isotopes

Back 4

two or more atoms of the same element that have different numbers of neutrons.

Front 5

mass number

Back 5

sum of the atom's neutrons and protons.

Front 6

metal

Back 6

elements that are maleables, ductile generally have a shiny or metallic luster.

Front 7

nonmetal

Back 7

elements that are usually dull and are poor conductors of heat and electricity.

Front 8

metaloid

Back 8

elements that have characteristics of both metal and nonmetal, generally are brittle and dull and are poor conductors of heat and electricity.