Articles Index

Calculating Concentration
Calculate the concentration of chemical solutions in percent composition by mass, molarity, molality, and normality. Make dilutions by adding the correct volume of solvent to make a new solution.

States of Matter
Get definitions and examples of the main states of matter: solids, liquids, gases, and plasma.

The Scientific Method
Science fair and research projects apply the scientific method. Here's an explanation of the scientific method and how it is used.

Photosynthesis Basics - Study Guide
Learn the essential steps of photosynthesis, the set of chemical reactions plants use to make their own food.

Chemical & Physical Changes
Find out what chemical and physical changes are, get examples, and learn how to tell them apart.

Solutions, Suspensions, Colloids, and Dispersions
Learn how to distiguish between solutions, suspensions, colloids, and dispersions. Get examples of the different types of mixtures.

Endothermic Reaction Examples
This is a list of chemical reactions that are endothermic reactions.

Miscibility of Fluids
Explanation of Miscibility of Fluids.

Chemical Reaction Orders
Learn how to classify chemical reactions using kinetics. Identify and define zero, first, second, mixed, and higher order reactions.