A reaction mechanism is a sequence of elementary reactions that can explain how an overall chemical reaction proceeds. Direct conversion of carboxylic acids to nitriles is desirable but ...

Reaction kinetics and dynamics refers to the study of why, how and how fast chemical processes take place. Chemists seek to understand the details of change at the molecular and quantum level and how ...

Spotting new bumps on your body can leave you scrambling to find pictures of skin rashes to compare them against. While there’s a large range of things that can cause skin rashes, doing your best to ...

In 1942, the Manhattan Project needed to create a chain reaction—a crucial step toward proving that it would be possible to make an atomic bomb. The scientists achieved this sustained nuclear reaction ...

Food allergy symptoms can start quickly after eating and may last from minutes to a couple of days. Seasonal allergy symptoms can last for weeks or even months if exposure to the allergen continues.

A fever higher than 100.4°F after an injection is a sign you should get medical help right away. It could mean there's an infection from a contaminated needle. A fever with chills is especially ...