CK-12 Foundation
Ck 12: Evolution of the Atomic Model
[Free Registration/Login may be required to access all resource tools.] Students take a closer look at how our understanding of the atom has evolved over time.
Sophia Learning
Sophia: Atomic Radius: Lesson 3
This lesson will define atomic radius. It is 3 of 3 in the series titled "Atomic Radius."
University of Colorado
University of Colorado: Ph Et Interactive Simulations: Molecule Shapes: Basics
Students studying molecule shapes will better understand its concepts with this virtual experiment that tests how a molecule's shape changes due to repulsions between atoms. Learning is further enhanced by building molecules in 3D.
American Chemical Society
Middle School Chemistry: Energy Levels, Electrons, and Ionic Bonding
Explore ionic molecular bonds and how electrons and their energy levels come into play.
TeachEngineering
Teach Engineering: Gumdrop Atoms
In this activity, students make a model of a lithium atom using gumdrops and toothpicks. Using this model, they investigate the makeup of an atom, including its relative size. Students also practice adding and subtracting electrons from...
CK-12 Foundation
Ck 12: Chemistry: Periodic Trends: Atomic Radius
[Free Registration/Login may be required to access all resource tools.] Defines atomic radius and explains trends in atomic radius.
Mocomi & Anibrain Digital Technologies
Mocomi: Molecules
When two or more atoms combine they give rise to a molecule. A molecule can be made up of many atoms of the same element. There are 112 elements known to man, so can you imagine the different permutations and combinations of molecules...
CK-12 Foundation
Ck 12: Physical Science: Rutherford's Atomic Model
[Free Registration/Login may be required to access all resource tools.] Rutherford's discovery of the nucleus and his planetary model of the atom.
CK-12 Foundation
Ck 12: Physical Science: Democritus' Idea of the Atom
[Free Registration/Login may be required to access all resource tools.] Introduction of the idea of the atom and the diversity of matter.
CK-12 Foundation
Ck 12: Plix: Build Some Helium: Atoms to Molecules
[Free Registration/Login Required] Build your own helium atom and make sure it has the correct number of protons, electrons, and neutrons on this site. Site also includes a small quiz on the topic.
CK-12 Foundation
Ck 12: Plix: Balancing Chemical Reactions
[Free Registration/Login Required] Demonstrate a normal chemical reaction by dragging atoms from the products to create the reactants in this chemical equation.
CK-12 Foundation
Ck 12: Plix: Balancing Chemical Equations
[Free Registration/Login Required] Before you can balance an equation, you need to count the number of each atom present in the reactants and products. Using the example that is shown here, apply the numbers and table to track how many...
CK-12 Foundation
Ck 12: Plix: Create an Atom: Electrons
[Free Registration/Login Required] Explore electrons by dragging the subatomic particles to the correct location to create a beryllium atom.
CK-12 Foundation
Ck 12: Physical Science: Atomic Nucleus
[Free Registration/Login may be required to access all resource tools.] Discusses the nucleus of an atom and what holds it together.
CK-12 Foundation
Ck 12: Physical Science: Electrons
[Free Registration/Login may be required to access all resource tools.] Explores electrons and their place in atoms.
CK-12 Foundation
Ck 12: Chemistry: Periodic Trends: Atomic Radius
[Free Registration/Login may be required to access all resource tools.] Defines atomic radius and explains trends in atomic radius.
Soft Schools
Soft Schools: Atomic Structure Quiz
Take an interactive quiz over the atomic structure and number of elements. After completing the quiz, check your score, and then revisit any incorrect question for further review
Soft Schools
Soft Schools: Subatomic Particles Quiz
Take this interactive, multiple-choice quiz over subatomic particles, then review your score and any missed questions at the end.
Other
Particle Adventure Dutch Version
Dutch version of the well-known "Particle Adventure" physics website that teaches students about atoms, mass, particle physics, and quantum physics. The site discusses theories related to physics and provides other links related to the...
PBS
Pbs: Scientific American Frontiers: Teaching Guide: Tasty Models (9 12)
In this hands-on lesson, young scholars use candy to construct models of nutrients (carbohydrates, proteins, and fats). Create visualizations that will aid in learning about dehydration synthesis and bond saturation in fat molecules....
Exploratorium
Exploratorium: Super Sparker
This is an activity using common household materials that will demonstrate a static electricity discharge.
Miami University
The Atoms Family: Static Electricity
This site contains a simple experiment that you can do at home that explains static electricity.
University of Oxford (UK)
Complex Ions: The Study of Metal Ions in Solution
This site provides examples of ionization with the use of Quicktime video clips.
Museum of Science
The Atom's Family: Mighty Molecules
In this activity, students construct models of molecules using marshmallows and gum drops.