This site from the University of Massachusetts links to downloadable freeware (Rasmol and CHIME) which are required to view 3-D images common on organic chemistry tutorials.

Expand your knowledge of Chemistry. Observe how ionic compounds are networks of electrically charged atoms.

A brief description of cycloalkanes. Properties, chemical make-up, and structure provided. Brief introduction to nomenclature of cycloalkanes and generic formula. Interactive piece requires x-pdb plug-in.

This unit will look at the most common biological molecules. The objective is for you to become familiar with the structures and properties of sugars, lipids, amino acids and nucleotides.

Learn about the solvent properties of water, pH, pKa and buffering capacity with a series of problems. The correct answers for the multiple choices problems are reinforced with a brief explanation and the incorrect answers are linked to...

Learn how metabolic acidosis or alkalosis can arise and how these conditions shift the bicarbonate equilibrium. The correct answers for the multiple choices problems are reinforced with a brief explanation and the incorrect answers are...

Learn which biological reactions require either B12, folate or both and he consequences of a deficiency in either vitamin. The correct answers for the multiple choices problems are reinforced with a brief explanation and the incorrect...

The purpose of this set of problems is for you to become familiar with some key principles about enzymes, catalysis and energy. The correct answers for the multiple choices problems are reinforced with a brief explanation and the...

The purpose of this set of problems is to give you a basic understanding of some of the fundamental concepts of metabolism. The correct answers for the multiple choices problems are reinforced with a brief explanation and the incorrect...

In this module you can learn how certain carbohydrate pathways are reciprocally affected by insulin and glucagon. The correct answers for the multiple choices problems are reinforced with a brief explanation and the incorrect answers are...

In this module you will be able to test your understanding of how light energy is converted into different forms of chemical energy during photosynthesis, to review the equations for the light reactions of photosynthesis, and to explore...

This photo shows an enormous gold nugget. Known as the Mojave Nugget, it weighs 156 ounces and is the largest gold nugget found in California. Gold is a precious metal with the chemical symbol Au. For more information on gold, check out...

This orange and black picture is used to bring clear attention to the highly flammable materials in the area. The graphic in the middle shows a large flame.

This photo shows a well protected lab technician pouring highly concentrated hydrochloric acid ammonia into a beaker.

This is a simple picture of a hydrogen atom using the Bohr model. A negatively charged electron can be seen on the outside of the positively charged proton.

A computer generated image showing a 3D model of hydrogen bonds in water.

This hazardous substances sign warns against a potentially dangerous inhalation hazard. The words are in large black writing while there is a white skull and cross bones in the top corner.

The raging hot heat coming from this giant mass of melted iron can easily be seen in this photo. The melted iron illuminates what would otherwise be a dark picture.

This sign warns against nonflammable but still potentially dangerous gas. It has white writing and a white graphic set against a green background.

This hazardous substances sign warns of potentially dangerous organic peroxide oxidizing agent. The writing and graphic are in black while the background is a bright yellow.

This hazardous materials sign is to warn of potentially dangerous oxygen in the area.

This diagram shows a 3D computer generated image of the triatomic molecule known as ozone. Ozone is an allotrope that contains three oxygen atoms. The ozone layer found in the upper atmosphere helps protect the Earth against potentially...

This hazardous materials sign warns against poisonous substances. The word poison is written in large black letters while the always intimidating skull and cross bones image can be seen above.

This is a close up photo of a powder steel sample. The image is very clear and you can easily see the individual steel grains against the white background.