Elements and Compounds: Understanding elements and compounds is basic knowledge to study chemistry. Elements are the basic building blocks of matter, while compounds are substances formed when two or ...

VOCs, or volatile organic compounds, are compounds that contain carbon atoms and that, at room temperature, easily evaporate. Too small to see and virtually omnipresent both indoors and out, they can ...

There are lots of different substances but only just over a hundred elements. An element is a substance that is made up of only one kind of atom. The atoms in a particular element are the same as each ...

Using patents published by leading pharmaceutical companies in the 2000–2010 period, the molecular properties of the compounds acting at the drug targets pursued have been analysed. Over the past ...