Physical Science Chapter 17

A table of the chemical elements that is arranged to display their periodic properties in relation to their atomic numbers.

• Periodic law of the elements

• Periodic table of the elements

• Periodicity

• Family

The properties of the elements vary with their atomic numbers in a periodic way

• Periodicity

• Periodic law of the elements

• Periodic table of the elements

• Family

An element that is typically dense, solid, ductile, malleable, highly conductive, and chemically reactive; have few valence electrons and comprise almost three-fourths of all elements

• Non metal

• Metalloid

• Metal

• Alkali metal

An element that typically has four or more valence electrons. It may be a gas, a liquid, or a dull, brittle solid at standard conditions. They are generally poor conductors, and their chemical activity is highly variable, from very reactive to inert

• Non metal

• Metal

• Metalloid

• Alkali metal

An element that is neither a metal nor a nonmetal that can display some characteristics of either under certain conditions

• Non metal

• Metal

• Metalloid

• Alkali metal

Elements having the same valence electron structure and often similar chemical properties. Elements in this reside in a column on the periodic table. These are named by the element at the top of the column

• Class

• Family

• Period

• Group

An element in Group 1A of the periodic table; a strongly reactive metal with an oxidation number of +1

• Alkali Metal

• Alkaline-earth metal

• Carbon Family

• Nitrogen Family

An element in Group 2A of the periodic table; a very reactive metal having an oxidation number of +2

• Alkali Metal

• Nitrogen Family

• Alkaline-earth metal

• Carbon Family

Group 4A of the periodic table. The elements have variable chemical activity and usually have an oxidation number of +4 or -4, depending on the other elements they bond with

• Alkaline-earth Metal

• Alkali Metal

• Carbon Family

• Nitrogen Family

Group 5A of the periodic table. The chemical activity of this group is highly variable. Several elements have as many as eight different oxidation numbers

• Nitrogen Family

• Transition Element

• Carbon Family

• Oxygen Family