Fact-Index.com offers a brief dictionary definition of the Balmer series, including hyperlinked terms.

Fact-Index.com offers a dictionary definition of the Paschen series, including hyperlinked terms.

Students draw and interpret Lewis dot diagrams for individual atoms and both covalent and ionic compounds.

This module develops atomic-level causal models to explain observations of electrostatic interactions via the following activities: Activity 1. What is the effect of changing the composition of an atom? Activity 2. How do objects become...

During this exercise, practice finding the number of valence electrons in an element. [1:22]

View the interactions between an atom of xenon and a buckyball when they collide.

Article explains the experiments on the photoelectric effect and how these experiments led to the idea of light behaving as a particle of energy called a photon.

A tutorial that explores the concepts of heat and temperature, the transfer of energy between substances, the relationship of temperature and the movement of atom, and thermal radiation. The tutorial includes animations, interactive...

This lesson explains what is represented by the atomic mass, and how it varies from one element to the next. Module includes a slideshow and a quiz.

[Free Registration/Login Required] Given prior knowledge of bonding and the molecular make up of aspartame, examine the model and determine which color represents which atom. Drag the labels at the bottom to the appropriate colored atom...