Atomic Structure and The Periodic Table

This set of flashcards covers key concepts related to atomic structure, the periodic table, and electron models based on lecture notes.

Atomic Number

Determines the identity of an atom and equals the number of protons and electrons.

Atomic Mass

The sum of protons and neutrons.

Neutrons

Calculated as Mass minus Protons.

Subatomic Particles

Particles that make up an atom: protons (positive charge), neutrons (neutral charge), and electrons (negative charge).

Isotopes

Atoms of the same element with different numbers of neutrons.

Average Atomic Mass

A weighted average mass of all an element's isotopes, closest to the most common isotope.

Periodic Table Arrangement

Elements are arranged by atomic number in the modern periodic table.

Groups/Families

Columns on the periodic table where elements have similar chemical properties due to the same number of valence electrons.

Valence Electrons

Electrons in the outermost energy level that determine an atom's chemical properties.

Bohr Model

A model that shows electrons in specific energy levels around the nucleus.

Lewis Dot Diagrams

Diagrams that depict only valence electrons to show how an atom will bond.

States of Matter

The physical forms in which substances exist: solids, liquids, and gases at room temperature.