[Free Registration/Login Required] Explore the composition of air and learn about the different atoms and molecules that we breathe every day.

A basic explanation of spin and how it relates to electrons and quantum numbers.

Activity 1 in this module: What is the effect of changing the composition of an atom? Since all atoms contain protons, neutrons, and electrons, what makes one element different from another is examined.

Through this reading, students will learn that a substance's properties arise from its molecular structure, not from how it's made (i.e., synthesized by people or found in nature). There is no fundamental difference between natural and...

This StudyCards stack enables students to review the terms associated with learning and using the Periodic Table of the Elements.

[Free Registration/Login may be required to access all resource tools.] Valence electrons, their variation in the periodic table and relation to reactivity and electrical conductivity of elements.

Through hands-on activities, students play the role of nitrogen atoms traveling through the nitrogen cycle to gain understanding of the varied pathways through the cycle and the relevance of nitrogen to living things.

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...

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.

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.

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.

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.

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.

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.

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.

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.

Acting as a subtopic of the General Chemistry Virtual Textbook's section on Atoms and the Periodic Table, this site discusses shared chemical bonds between two elements resulting in electronegative and electropositive outcomes.

Josh Kurz breaks macaroni salad down to its smallest chemical components. [3:14]

Choose the element that matches the electron configuration.

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.

Kids learn about soaps and salts in chemistry including interesting facts, how soap is made, how soap works, and what are salts in this site.

On this site, students learn about solutions and dissolving in chemistry including interesting facts, examples, solubility, saturation, concentration, and what is a solution?

Kids learn about separating mixtures in chemistry including separation processes such as filtration, distillation, and the centrifuge.

Kids learn about the science of radioactivity and radiation in chemistry including radioactive decay, types, measurements, half-life, and the dangers.