Classification of Elements ... one type of compound is transformed into another type of compound, the chemical reaction is then called oxydation and reduction. // the polar- numher is increased ...

Many chemical reactions are irreversible ... Investigate some changes at home or in school (with a grown up to help) and classify them as reversible or irreversible. You could try: stirring ...

In a nutshell Scientists have developed a powerful new microscope called SMART-EM that can record real-time videos of individual atoms and molecules during chemical reactions, something that was ...