Engineering Guide: Chemistry Resources

Basic Concepts

The principles of chemistry include topics such as chemical nomenclature, atomic structure, periodic table, chemical reactions, Stoichiometry, and acids and bases. 

Basic Chemistry Concepts

Acids and Bases

General Chemistry Glossary

Acid Base Chemistry

Dimensional Analysis

Units and Dimensions in Physical Chemistry

Introduction to Chemical Nomenclature

Chemistry Basics 


Atoms, Molecules, and Ions

An atom is an extremely tiny particle of matter that retains its identity during chemical reactions. A molecule is a definite and specific group of atoms that are chemically bonded together and connected by attractive forces. An ion is an electrically charged particle obtained from an atom or chemically bonded group of atoms by adding or removing electrons.

Atoms, Elements, and the Nucleus

The Atomic Molecular Theory

Basic Chemistry: Atoms and Ions

Molecular Structure and Bonding

Naming Ions and Acids 


Structure of Atoms

The sub-atomic particles in the atom consist of the protons, neutrons, and electrons. The nucleus is located at the center of the atom and contains the protons and the neutrons. The electrons are found at considerable distances from the nucleus in a series of levels called energy levels.

A Simple View of Atomic Structure

Structure of the Atom

Basic Concepts: Atomic Structure 



Stoichiometry is the quantitative description of the proportions by moles of the substances in a chemical reaction.

Introduction to the Mole Concept in Chemistry

How to Understand and Use Formulas in Calculations

Basic Chemical Arithmetic and Stoichiometry


Elemental Analysis

Interactive Mole-Mole and Mass-Mass Stoichiometry Tutorial

The Mole and Stoichiometry   



The properties of gases include pressure, volume, temperature, and amount of substance. Experimental relationships or laws (such as Charles’ Law and Boyle’s Law)  are used in order to connect the properties of gases.

General Chemistry Online: Gases

Gas Laws

Ideal Gases

Gas Laws Formula Sheet   


Intermolecular Forces

The forces holding molecules together are generally called intermolecular forces. These forces play a particularly important role the ways in which molecules interact and form biological organisms and life.

Intermolecular Forces

The Forces Between Molecules

Topics: Intermolecular Forces

Bonding Notes