Energy & Green Tech

Building a circular chemical economy

Carbon dioxide is essential to plant and animal life, but in excess it negatively impacts the environment by absorbing and radiating heat in the atmosphere, contributing to global warming.

Energy & Green Tech

New electrocatalysts to produce ethanol more efficiently

In recent years, researchers worldwide have been exploring new methods of producing ethanol, a chemical compound that is extensively used in a variety of industrial settings. One way to produce this compound is via what is ...

Energy & Green Tech

New system for widespread availability of green hydrogen

Hydrogen researchers at Graz University of Technology, together with the Graz-based start-up Rouge H2 Engineering, have developed a cost-effective process for the decentralised production of high-purity hydrogen.

Electronics & Semiconductors

'Lean lab' approach enables quick research ramp down

When MIT announced in March that most research labs on campus would need to ramp down to help prevent the spread of Covid-19, Canan Dagdeviren's lab was ready.

Energy & Green Tech

Can renewable energy really replace fossil fuels?

As global temperatures and energy demand rise simultaneously, the search for sustainable fuel sources is more urgent than ever. But how can renewable energy possibly scale up to replace the vast quantities of oil and gas ...

Energy & Green Tech

Technique harvests waste heat from untapped sources

Thermoelectric materials convert heat to electricity or vice versa. However, their application to harvest waste heat is limited by challenges in fabrication and materials. Finding cost-effective ways to cover large and potentially ...

page 1 from 7

Chemical reaction

A chemical reaction is a process that always results in the interconversion of chemical substances. The substance or substances initially involved in a chemical reaction are called reactants. Chemical reactions are usually characterized by a chemical change, and they yield one or more products, which usually have properties different from the reactants. Classically, chemical reactions encompass changes that strictly involve the motion of electrons in the forming and breaking of chemical bonds, although the general concept of a chemical reaction, in particular the notion of a chemical equation, is applicable to transformations of elementary particles, as well as nuclear reactions. Different chemical reactions are used in combination in chemical synthesis in order to get a desired product. In biochemistry, series of chemical reactions catalyzed by enzymes form metabolic pathways, by which syntheses and decompositions ordinarily impossible in conditions within a cell are performed.

This text uses material from Wikipedia, licensed under CC BY-SA