Petroleum is "cracked" as they call it from it's state found in nature. In nature, petroleum can take the form something as light a gas, or as heavy as tar, and everything in-between.
What people commonly think of as petroleum is oil. VERY SIMPLY, oil is heated in a very tall, very narrow tank. The heavest portions of the oil "kerosen" come out at the bottom, then diesel, then gasoline. Heating the oil helps to separate the crude oil out into its separate components. The amount and ease to which crude oil is "cracked", or, refined, is dependent on how many carbon atoms are in it's molecular structure. The fewer, the lighter weight -- like natural gas. the more carbons, the more like tar it is.
Yes . . . motor oil IS refined petroleum.
Algeria exports petroleum gas, crude petroleum, refined petroleum, ammonia, and fertilizer.
Algeria exports crude petroleum, petroleum gas, refined petroleum, coal tar oil and ammonia. They import cars, refined petroleum, delivery trucks, raw iron bars and wheat.
Italy's main import is crude petroleum. Other important imports include petroleum gas, cars, packaged medicaments and refined petroleum. By contrast, Italy's main exports are refined petroleum and packaged medicaments.
Cracking
Basestock is refined petroleum oil with no additives.
Crude Petroleum – $45 billion. Petroleum Gas – $8.6 billion. Refined Petroleum – $940 million. Cocoa Beans – $621 million. Gold – $577 million.
kerosene is a more refined version of crude petroleum
Petroleum is refined from crude oil and is but one fraction only
kerosene is a more refined version of crude petroleum
Petroleum. I'm not sure if it's a distillation process. Diesel is refined from petroleum but I'm not sure how.
petroleum is a fuel but not pure form of fuel it refined to make it pure and from petroleum many components extracted such as CNG, Diesel etc.