Khan Academy
Khan Academy: Molecules and Compounds
Article defines and explains compounds which are either ionic or covalent and molecules which are the simplest unit of a covalent compound. Molecules can be represented in many different ways.
Khan Academy
Khan Academy: Dalton's Atomic Theory
Article explores the key points of Dalton's atomic theory and the laws of conservation of mass and constant composition. Which points do we still use today?
Khan Academy
Khan Academy: Biology: Chemistry of Life: Matter, Elements, and Atoms
Did you know matter is made up of atoms? In this article learn about the smallest unit of matter called the atom.
Khan Academy
Khan Academy: Biology: Chemistry of Life: Atomic Number,atomic Mass,and Isotopes
Learn the fundamental properties of atoms in this article. Understand the definition of atomic number, atomic mass, and isotopes. [6 min, 50 sec]
American Chemical Society
American Chemical Society: Hompage
ChemCenter, available from the American Chemical Society, provides chemistry news, reference sources and other public services.
Texas Education Agency
Texas Gateway: Introducing the Atom
Get an introduction to the atom in this tutorial.
Texas Education Agency
Texas Gateway: Average Atomic Mass
A tutorial describing average atomic mass and how it is calculated.
Chem4kids
Chem4 Kids
Here you can find all kinds of helpful information about chemistry. Learn about reactions, elements, atoms, matter, or biochemistry. Downloads and activities are also included.
Sophia Learning
Sophia: Science Tutorial: Matter
Created to teach students of the 21st century, SOPHIA is bringing matter straight to your fingertips. Become the commander of your own learning experiences as you take part in this interactive tutorial. [1:02]
Michael Blaber, PhD
Florida State University: The Bohr Model of the Atom
A well designed clear tutorial explaining the energies involved in the Bohr model of the atom. Illustrations add to the clearly presented equations.
Environmental Chemistry
Environmental chemistry.com: Anatomy of an Atom
Explains the basics of atomic structure, from simple definitions to information about quantum theory. Accurate and helpful basics whether or not you need the more advanced information.
Chem4kids
Chem4 Kids: Atoms
This site provides a detailed overview of atoms. Content explores an atom's structure, as well as what ions are, how atoms bond, what compounds are (including how to name compounds), and what isotopes are.
University of Colorado
University of Colorado: Ph Et Interactive Simulations: Molecule Shapes: Basics
Explore molecule shapes by building molecules in 3D. Find out how a molecule's shape changes as you add atoms to a molecule.
NASA
Nasa: Atoms and Molecules in Motion, States of Matter [Pdf]
Everythingin the universeis either matter or energy. All matter is made of combinations of about one hundred basic building blocks, the chemical elements on the periodic table. Going a step further and breaking these elements down to...
PBS
Nova: Atom Builder
Find out if you know enough about atoms to build them. The goal of the activity is to build an atom of a particular element by dragging the correct numbers of neutrons, protons and electrons into the atom.
Department of Defense
Do Dea: Chemistry Review
Review atoms with this slideshow. You can choose to listen to the review or read the accompanying text. At the end, play the game to review the basics of atoms that you have just learned about. You may play the game as many times as...
BBC
Bbc: Gcse Bitesize Science: Atomic Structure
An explanation of atomic structure and the element groups in the periodic table using plain language. Supported by diagrams and charts.
Frostburg State University
General Chemistry Online: Atoms & Ions
This site from the General Chemistry Online of the Frostburg State University provides a review of the history of atomic theory, the discovery of the electron, and the discovery of the nucleus. Details on weighing atoms, ion charges,...
Concord Consortium
Concord Consortium: Stem Resources: Atomic Structure
Introduces learners to atomic models of the past and present, focusing on the orbital model and an explanation of its basis. Learners then have the opportunity to "make an atom" and contrast it with an ion, followed by an isotope. The...
Concord Consortium
Concord Consortium: Stem Resources: Spectroscopy
Web-based activity walks learners through the use of spectroscopy in determining the identity of atoms and molecules by defining the excited state of atoms, the frequencies of emitted photons, and atoms' ability to absorb them....
PBS
Pbs Learning Media: Periodic Table of the Elements
This interactive periodic table developed for Teachers' Domain provides detailed information about the chemical properties of elements and illustrates the electron configurations that determine those characteristics.
CK-12 Foundation
Ck 12: Atoms
[Free Registration/Login may be required to access all resource tools.] Students learn about atoms and atomic structure in this collection of instructional videos, grade-level texts, and quick assessments.
Chem Tutor
Chem tutor.com: Atomic Structure
This page provides a thorough and comprehensible discussion of the structure of the atom. Includes helpful diagrams and instructions for filling electron shells, reading the Periodic Table, and drawing Lewis Structures.
Lawrence Berkeley National Laboratory
Berkeley Lab: The Particle Adventure
Visit this site for an interactive tour of the atom and all aspects of particle physics. View the animations available with almost every description on this site. A great place for the fundamentals of particles and forces including a...