Atoms and the Periodic Table Vocab

Electrons in an atoms outermost orbitals; determine the chemical properties of an atom

Group 18 on the periodic table

Elements that are generally gasses or dull, brittle solids that are poor conductors of heat and electricity

What does the image show?

The number of protons in an atom:

What does the image show?

Vertical column of elements in the periodic table arranged in order of increasing atomic number, also called a family

Atomic Mass Unit

smallest particle of an element that retains all the properties of that element, electrically neutral

Indicates the relative ability of an elements atoms to attract electrons in a chemical bond

A subatomic particle with no charge, found inside the nucleus

An atom or bonded group of atoms with a positive or negative charge

The total distance from the nucleus of an atom to the outermost orbital of its electron

Elements in groups 3-12

A chemical bond that results from the sharing of valence electrons

States that atoms lose, gain, or share electrons in order to acquire the stable electron configuration of a noble gas.

An element that has physical and chemical properties of both metals and nonmetals

Atoms of the same element with different numbers of neutrons

An ion with a negative charge

Group 17 on the periodic table

Electrostatic force that holds oppositely charged particles together in an ionic compound

A subatomic particle with a positive charge, found inside the nucleus

The impulse for which a chemical substance undergoes a chemical reaction with an overall release of energy

What is the image an example of?

An ion with a positive charge

The weighted average mass of the isotopes of that element:

Atomic model in which electrons are treated as waves, sometimes called Wave Mechanical Model.

Element that is solid at room temperature, good conductor of heat and electricity, and generally is shiny

Group 1 elements, except for hydrogen, they are reactive and usually exist as compounds with other elements

Group 2 elements, highly reactive

Extremely small, positive charged, dense center of an atom, composed of protons and neutrons

A model that uses electron=dot structures to show how electrons are arranged in molecules using pairs of dots and lines

A subatomic particle with a negative charge, found orbiting the nucleus

A horizontal row of elements in the periodic table