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• hydrogen bonds
• properties
• chemical
• hydrogen
• oil
• fractional distillation
• homologous series
• covalent bonds
• compound
• hydrocarbon
• hydrophobic
• general formula

A 1 is a type of chemical 2 . It is made of only 3 and carbon atoms. They can be found in crude 4 and are separated by 5 (which means they are separated into different groups). The hydrogen and carbon are bonded with non-polar 6 . Because of its lack of polar covalent bonds, hydrocarbons cannot create 7 with water and are 8 .

Hydrocarbons are grouped into "families" or 9 "". There are five main families. The hydrocarbons in each family have a 10 and similar 11 properties, and similar trends in physical 12 .