There is a considerable number of hydrocarbon oils (popularly spoken ... characteristic of most oils of its class. The art of distilling similar oils from coal tar, was developed later, and ...

2.2 Activity: “Hydrocarbons and Fuels” (20–30 min out of class). This activity is intended to be given following Lecture B.1. It could be done individually or as small groups in or out of class.

Coincidentally, classes have been suspended Monday and Tuesday in 58 Arica schools after hydrocarbons were smelled in the drinking water supplied by the Aguas del Altiplano company to around ...