Periodic Table Vocabulary

An element that is shiny and that conducts heat and electricity well.

An element that has properties of both metals and nonmetals.

The number of protons in the nucleus of an atom.

The sum of the numbers of protons and neutrons in the nucleus of an atom.

A subatomic particle has no charge and is located in the nucleus of an atom.

The smallest unit of an element that maintains the properties of that element.

The weighted average of the masses of all naturally occurring isotopes of an element.

A one-, two, or three letter abbreviation of the name of an element.

An element that conducts heat and electricity poorly.

A subatomic particle that has a positive charge and that is located in the nucleus of an atom

An atom's central region, which is made up of protons and neutrons.

A subatomic particle that has a negative charge.

In chemistry, a horizontal row of elements in the periodic table.

An arrangement of the elements in order of their atomic numbers.

A region around the nucleus of an atom where electrons are likely to be found.

A vertical column of elements in the periodic table; elements in a group share chemical properties.