This lesson focuses on the structure of atoms. All substances are made from atoms. Each atom is made of a nucleus - containing protons and neutrons - surrounded by electrons. It provides a link to an assessment.

The number of protons in the atom of an element determines its place in the Periodic Table. The number of electrons in an atom is the same as the number of protons. These electrons are arranged in shells or 'energy levels' around the...

The module will develop, revise, and interpret representations of atomic structure and interactions of charges within atoms. The following activities will be explored: Activity 1. What are the particles that make up all substances and...

A detailed slideshow for Grade 8 students that looks at the history of our understanding of atoms. Looks at the ideas presented by Democritus, John Dalton, J.J. Thomson, Ernest Rutherford, and Niels Bohr, and the modern-day wave model. A...

This lesson plan explores the fundamentals of atoms and their structure. The building blocks of matter (protons, electrons, neutrons) are covered in detail. Students think about how atoms and molecules can influence new technologies...

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...

If you want to understand electricity, you first need to know a little about matter, atoms and electrons.

Lists the exceptions to the octet rule and provides a discussion and diagrams explaining each one. Includes clear diagrams illustrating this concept.

[Free Registration/Login may be required to access all resource tools.] Covers energy levels of atoms, their relation to orbitals, and the significance of electrons at different energy levels.

At this site from the Purdue University, the elementary subatomic particles are described and electromagnetic radiation is detailed. Includes learning exercises and answers.

An introduction to the Standard Model, a theory which attempts to explain atomic structure using leptons, quarks, and force carrier particles.

Take this interactive, multiple-choice quiz over subatomic particles, then review your score and any missed questions at the end.

This lesson will define the Octet Rule and how this effects an atom's stability. It is 4 of 5 in the series titled "Octet Rule."

Build elements and molecules using neutrons, protons, and electrons. Choices include helium, carbon, oxygen, aluminum, water, and salt.

Learn the fundamentals of particles and forces with this site. Explore the paths that explain matter in the universe.

Describe the $ifference between the subatomic particles, including their masses, locations, and charges. This lesson is 2 of 7 in the series titled "Subatomic Particles."

Acting as a subtopic of the General Chemistry Virtual Textbook's section on Atoms and the Periodic Table, this site discusses the properties of the atoms individually in relation to the main group elements of the Periodic Table.

This personal page describes the history and technical facts of the atom, including the nucleus, nucleons, the Bohrs atom, the electron, and more.

This personal page describes the history and technical facts of the atom, including the nucleus, nucleons, the Bohrs atom, the electron, and more.

Test yourself on the names and formulas of some common anions. This interactive animation makes it fun to learn about atoms that have gained electrons.

Take a look at the parts of an atom and learn about its properties.

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?

[Free Registration/Login may be required to access all resource tools.] In this online tutorial students will explain the law of conservation of mass, the law of definite proportions, and the law of multiple proportions. They will also...

In this interactive, students can explore how current, voltage, and resistance are related in a model showing the flow of electrons in an electric circuit. They will learn about Ohm's law and how other forms of energy can be made from...