Phycial sciences 4

Symbol

One or two letter that represent the name of an element.

periodic table

An arrangement of elements by increasing atomic number.

Isotope

One group of an atom of element with the same number of protons and electrons but different numbers of neutrons.

deuterium

An isope of hydrogen that has one proton and one neutron

Tritium

An isope of hydrogen that has one proton and two neutrons.

Atomic Mass

The average mass of all isopes of a particular

family

A group of and elements with similar propites arranged together in a column of the periodic table

noble gas

One of a group of elements made up of gases that do not material under ordinary condition

Metal

One group of elements that is usually solid at room that is usually soild .

Alloy

A mixture of two or more metal.

nonmetal

one of a group of elements with properties unlike those of metal.

intert

Lacking that power to move.